#ifdef LOCAL
#include <header.hpp>
#else
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/priority_queue.hpp>
#endif
#define lp(i, l, r) for (auto i = regu(l); i <= decltype(i)(r); ++i)
#define rp(i, r, l) for (auto i = regu(r); i >= decltype(i)(l); --i)
#define lv(i, a) for (int i = 0; i < int(a.size()); ++i)
#define rv(i, a) for (int i = int(a.size()) - 1; i >= 0; --i)
#define lm(i, m) for (auto i = m; i; i = (m) & (i - 1))
#define many for (int C = 1, T = -1; T < 0 && cin >> T, C <= T; ++C)
#define goog "Case #" + to_string(C) + ":"
#define rang(a) begin(a), end(a)
#define elif else if
#ifndef LOCAL
#define endl '\n'
#undef assert
#define assert
#endif
using namespace std;
using namespace __gnu_pbds;
const auto eps = 1e-8, pi = acos(-1);
template <class T> int comp(const T &a, const T &b) {
    return a < b - eps ? -1 : (a > b + eps);
}
#if __cplusplus > 201103L
template <class T> auto regu(const T &a) { return int(a); }
template <> auto regu(const long long &a) { return a; }
template <> auto regu(const unsigned long long &a) { return (long long)a; }
#endif
template <class T> int barr(const T &a, const int &i) { return a >> i & 1; }
template <class T> int bcnt(const T &a) { return __builtin_popcount(a); }
template <> int bcnt(const long long &a) { return __builtin_popcountll(a); }
template <class T> int blen(const T &a) { return a ? 1 + blen(a / 2) : 0; }
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
template <class T> T rint(T l, T r) {
    return uniform_int_distribution<T>(l, r)(rng);
}
template <class A, class B> B conv(const A &a, B b = B()) {
    stringstream s;
    s << a, s >> b;
    return b;
}
template <class T = int> T inf() { return numeric_limits<T>::max() / 2; }
template <class T> T sign(const T &a) { return a == 0 ? 0 : (a < 0 ? -1 : 1); }
template <class T> T floor(const T &a, const T &b) {
    assert(b != 0);
    return sign(a) * sign(b) > 0 ? abs(a) / abs(b)
                                 : -(abs(a) + abs(b) - 1) / abs(b);
}
template <class T> T ceil(const T &a, const T &b) {
    assert(b != 0);
    return sign(a) * sign(b) > 0 ? (abs(a) + abs(b) - 1) / abs(b)
                                 : -abs(a) / abs(b);
}
template <class T> bool tmin(T &a, T b) { return b < a ? a = b, true : false; }
template <class T> bool tmax(T &a, T b) { return b > a ? a = b, true : false; }
#if __cplusplus > 201103L
template <class T> auto min(const T &a) { return *min_element(rang(a)); }
template <class T> auto max(const T &a) { return *max_element(rang(a)); }
template <class T> auto sum(const T &a) {
    return accumulate(rang(a), (typename T::value_type)0);
}
template <> auto sum(const vector<int> &a) { return accumulate(rang(a), 0ll); }
template <> auto sum(const vector<string> &a) {
    return accumulate(rang(a), string());
}
template <class C, class V> auto find(C &c, const V &v) {
    return find(rang(c), v);
}
template <class C, class V> auto find(const C &c, const V &v) {
    return find(rang(c), v);
}
#endif
template <class T, class C = less<typename T::value_type>>
void sort(T &a, C c = C()) {
    sort(rang(a), c);
}
template <class T> void reve(T &a) { reverse(rang(a)); }
template <class T> void uniq(T &a) {
    sort(a), a.erase(unique(rang(a)), end(a));
}
template <class T> void shuf(T &a) { shuffle(rang(a), rng); }
template <class T> void merg(T l, T m, T r) { inplace_merge(l, m, r); }
#if __cplusplus > 201103L
template <class T> auto vect(const T &v, int n) { return vector<T>(n, v); }
template <class T, class... D> auto vect(const T &v, int n, D... m) {
    return vector<decltype(vect(v, m...))>(n, vect(v, m...));
}
#endif
template <class F, class S> istream &operator>>(istream &s, pair<F, S> &a) {
    return s >> a.first >> a.second;
}
template <class F, class S>
ostream &operator<<(ostream &s, const pair<F, S> &a) {
    return s << a.first << " " << a.second;
}
template <class T> istream &operator>>(istream &s, vector<T> &a) {
    for (int i = -1; i < 0 && (!a.size() && (cin >> i, a.resize(i), 0), i = 0),
             i < int(a.size());)
        s >> a[i++];
    return s;
}
template <class T> ostream &operator<<(ostream &s, const vector<T> &a) {
    lv(i, a) cout << a[i] << (i + 1 == int(a.size()) ? "" : " ");
    return s;
}
template <class T> T in() {
    T a;
    cin >> a;
    return a;
}
template <class T> void in(T &a) { cin >> a; }
template <class A, class... B> void in(A &a, B &... b) { cin >> a, in(b...); }
void ou() { cout << endl; }
template <class T> void ou(const T &a) { cout << a << endl; }
template <class A, class... B> void ou(const A &a, const B &... b) {
    cout << a << ' ', ou(b...);
}
bool yep(const bool &a) { return ou(a ? "yes" : "no"), a; }
bool Yep(const bool &a) { return ou(a ? "Yes" : "No"), a; }
bool YEP(const bool &a) { return ou(a ? "YES" : "NO"), a; }
template <class T> struct hash_safe {};
template <> struct hash_safe<int> {
    size_t operator()(unsigned long long a) const {
        static unsigned long long d =
            chrono::steady_clock::now().time_since_epoch().count();
        a += d + 0x9e3779b97f4a7c15, a = (a ^ (a >> 30)) * 0xbf58476d1ce4e5b9;
        a = (a ^ (a >> 27)) * 0x94d049bb133111eb;
        return a ^ (a >> 31);
    }
};
template <> struct hash_safe<long long> {
    size_t operator()(unsigned long long a) const {
        return hash_safe<int>()(a);
    }
};
template <class A, class B> struct hash_safe<pair<A, B>> {
    size_t operator()(pair<A, B> a) const {
        auto h = hash_safe<A>()(a.first), g = hash_safe<B>()(a.second);
        return (h >> 16 << 16) + (g >> 16);
    }
};
template <class T> using unordered_set_safe = unordered_set<T, hash_safe<T>>;
template <class T>
using unordered_multiset_safe = unordered_multiset<T, hash_safe<T>>;
template <class K, class V>
using unordered_map_safe = unordered_map<K, V, hash_safe<K>>;
template <class K, class V>
using unordered_multimap_safe = unordered_multimap<K, V, hash_safe<K>>;
#define unordered_set unordered_set_safe
#define unordered_multiset unordered_multiset_safe
#define unordered_map unordered_map_safe
#define unordered_multimap unordered_multimap_safe
template <class T, class C = less<T>>
using bbst =
    tree<T, null_type, C, rb_tree_tag, tree_order_statistics_node_update>;
template <class T, class C = greater<T>>
using heap = __gnu_pbds::priority_queue<T, C, pairing_heap_tag>;
using ll = long long;
using ld = long double;
using str = string;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
using vi = vector<int>;
using vl = vector<ll>;
using vpii = vector<pii>;
using vpll = vector<pll>;
using vvi = vector<vi>;
namespace divisor {
template <class T> auto divisor(vector<pair<T, int>> a) {
    vector<T> r;
    function<void(int, T)> dfs = [&dfs, &a, &r](int i, T now) {
        if (i == int(a.size())) {
            r.push_back(now);
            return;
        }
        for (int j = 0; j <= a[i].second; ++j) {
            dfs(i + 1, now);
            if (j < a[i].second)
                now *= a[i].first;
        }
    };
    dfs(0, 1);
    return r;
}
template <class T> auto divisor_with_mobius_function(vector<pair<T, int>> a) {
    vector<pair<T, T>> r;
    function<void(int, T, T)> dfs = [&dfs, &a, &r](int i, T now, T m) {
        if (i == int(a.size())) {
            r.emplace_back(now, m);
            return;
        }
        dfs(i + 1, now, m), dfs(i + 1, now * a[i].first, -m);
    };
    dfs(0, 1, 1);
    return r;
}
} // namespace divisor
namespace integer_factorization_1 {
template <class T> auto trivial_division(T n) {
    assert(n >= 1);
    vector<pair<T, T>> a;
    for (T i = 2; i * i <= n; ++i) {
        if (n % i == 0) {
            T t = 0;
            for (; n % i == 0; n /= i, ++t)
                ;
            a.push_back(make_pair(i, t));
        }
    }
    if (n != 1)
        a.push_back(make_pair(n, 1));
    return a;
}
struct linear_sieve {
    linear_sieve(int n) : next(n + 1) {
        vector<bool> is_prime(n + 1, 1);
        is_prime[1] = false;
        for (int i = 2; i <= n; ++i) {
            is_prime[i] && (p.push_back(i), next[i] = i);
            for (int j = 0; j < int(p.size()) && p[j] * i <= n; ++j) {
                is_prime[p[j] * i] = 0, next[p[j] * i] = p[j];
                if (i % p[j] == 0)
                    break;
            }
        }
    }
    auto run(int n) {
        assert(n >= 1);
        vector<pair<int, int>> a;
        while (n != 1) {
            int t = next[n];
            n /= t;
            if (a.empty() || a.back().first != t)
                a.emplace_back(t, 1);
            else
                ++a.back().second;
        }
        return a;
    }
    vector<int> next, p;
};
} // namespace integer_factorization_1
// The templates end here.
int main() {
    ios::sync_with_stdio(0);
    cout << setprecision(16) << fixed;
    cin.tie(0);
    int n;
    in(n);
    vi a(n);
    in(a);
    vi cnt(max(a) + 1);
    for (auto v : a)
        ++cnt[v];
    int ans = 0;
    integer_factorization_1::linear_sieve ls(max(a) + 1);
    for (auto v : a) {
        int fail = 0;
        for (auto d : divisor::divisor(ls.run(v))) {
            if (d < v && cnt[d]) {
                fail = 1;
                break;
            }
            if (d == v && cnt[d] > 1) {
                fail = 1;
                break;
            }
        }
        ans += 1 - fail;
    }
    ou(ans);
    return 0;
}


Measured memory_bytes: 12504