// Slower C++ solution:
// >>> TEMPLATES

#include <bits/stdc++.h>

using namespace std;

using ll = long long;

using ld = long double;

using i32 = int32_t;

using i64 = int64_t;

using u32 = uint32_t;

using u64 = uint64_t;

#define int ll

#define double ld

#define rep(i,n) for (int i = 0; i < (int)(n); i++)

#define rep1(i,n) for (int i = 1; i <= (int)(n); i++)

#define repR(i,n) for (int i = (int)(n)-1; i >= 0; i--)

#define rep1R(i,n) for (int i = (int)(n); i >= 1; i--)

#define loop(i,a,B) for (int i = a; i B; i++)

#define loopR(i,a,B) for (int i = a; i B; i--)

#define all(x) (x).begin(), (x).end()

#define allR(x) (x).rbegin(), (x).rend()

#define pb push_back

#define eb emplace_back

#define mp make_pair

#define fst first

#define snd second

template <class Int> auto constexpr inf = numeric_limits<Int>::max()/2-1;

auto constexpr INF32 = inf<int32_t>;

auto constexpr INF64 = inf<int64_t>;

auto constexpr INF   = inf<int>;

#ifdef LOCAL

#include "debug.hpp"

#define dump(...) cerr << "[" << setw(3) << __LINE__ << ":" << __FUNCTION__ << "] ", dump_impl(#__VA_ARGS__, __VA_ARGS__)

#define say(x) cerr << "[" << __LINE__ << ":" << __FUNCTION__ << "] " << x << endl

#define debug if (1)

#else

#define dump(...) (void)(0)

#define say(x) (void)(0)

#define debug if (0)

#endif

template <class T> using pque_max = priority_queue<T>;

template <class T> using pque_min = priority_queue<T, vector<T>, greater<T> >;

template <class T, class = typename T::iterator, class = typename enable_if<!is_same<T, string>::value>::type>

ostream& operator<<(ostream& os, T const& v) { bool f = true; for (auto const& x : v) os << (f ? "" : " ") << x, f = false; return os; }

template <class T, class = typename T::iterator, class = typename enable_if<!is_same<T, string>::value>::type>

istream& operator>>(istream& is, T &v) { for (auto& x : v) is >> x; return is; }

template <class T, class S> ostream& operator<<(ostream& os, pair<T,S> const& p) { return os << "(" << p.first << ", " << p.second << ")"; }

template <class T, class S> istream& operator>>(istream& is, pair<T,S>& p) { return is >> p.first >> p.second; }

struct IOSetup { IOSetup() { cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(15); } } iosetup;

template <class F> struct FixPoint : private F {

    constexpr FixPoint(F&& f) : F(forward<F>(f)) {}

    template <class... T> constexpr auto operator()(T&&... x) const { return F::operator()(*this, forward<T>(x)...); }

};

struct MakeFixPoint {

    template <class F> constexpr auto operator|(F&& f) const { return FixPoint<F>(forward<F>(f)); }

};

#define MFP MakeFixPoint()|

#define def(name, ...) auto name = MFP [&](auto &&name, __VA_ARGS__)

template <class T, size_t d> struct vec_impl {

    using type = vector<typename vec_impl<T,d-1>::type>;

    template <class... U> static type make_v(size_t n, U&&... x) { return type(n, vec_impl<T,d-1>::make_v(forward<U>(x)...)); }

};

template <class T> struct vec_impl<T,0> { using type = T; static type make_v(T const& x = {}) { return x; } };

template <class T, size_t d = 1> using vec = typename vec_impl<T,d>::type;

template <class T, size_t d = 1, class... Args> auto make_v(Args&&... args) { return vec_impl<T,d>::make_v(forward<Args>(args)...); }

template <class T> void quit(T const& x) { cout << x << endl; exit(0); }

template <class T, class U> constexpr bool chmin(T& x, U const& y) { if (x > y) { x = y; return true; } return false; }

template <class T, class U> constexpr bool chmax(T& x, U const& y) { if (x < y) { x = y; return true; } return false; }

template <class It> constexpr auto sumof(It b, It e) { return accumulate(b,e,typename iterator_traits<It>::value_type{}); }

template <class T> int sz(T const& x) { return x.size(); }

template <class C, class T> int lbd(C const& v, T const& x) {

    return lower_bound(v.begin(), v.end(), x)-v.begin();

}

template <class C, class T> int ubd(C const& v, T const& x) {

    return upper_bound(v.begin(), v.end(), x)-v.begin();

}

template <class C, class F> int ppt(C const& v, F f) {

    return partition_point(v.begin(), v.end(), f)-v.begin();

}

// <<<

vector<int> divisors(int n) {

    assert(n > 0);

    vector<int> a;

    int x = 1;

    for ( ; x*x < n; x++) if (n % x == 0) a.push_back(x);

    int s = a.size();

    if (x*x == n) a.push_back(x);

    a.reserve(a.size()+s);

    rep (i,s) a.push_back(n/a[s-1-i]);

    return a;

}



int32_t main() {

    int n; cin >> n;

    vector<int> a(n); cin >> a;



    const int M = 1e6 + 10;

    vector<int> cnt(M);

    rep (i,n) cnt[a[i]]++;



    set<int> s(all(a));

    int ans = n;

    rep (i,n) {

        if (cnt[a[i]] > 1) {

            ans--;

            continue;

        }

        for (int d : divisors(a[i])) {

            if (d == a[i]) continue;

            if (s.count(d) > 0) {

                ans--;

                break;

            }

        }

    }



    cout << ans << endl;





}


// Faster C++ solution for the same problem (measured speedup: 9.263417243703755x):
// >>> TEMPLATES

#include <bits/stdc++.h>

using namespace std;

using ll = long long;

using ld = long double;

using i32 = int32_t;

using i64 = int64_t;

using u32 = uint32_t;

using u64 = uint64_t;

#define int ll

#define double ld

#define rep(i,n) for (int i = 0; i < (int)(n); i++)

#define rep1(i,n) for (int i = 1; i <= (int)(n); i++)

#define repR(i,n) for (int i = (int)(n)-1; i >= 0; i--)

#define rep1R(i,n) for (int i = (int)(n); i >= 1; i--)

#define loop(i,a,B) for (int i = a; i B; i++)

#define loopR(i,a,B) for (int i = a; i B; i--)

#define all(x) (x).begin(), (x).end()

#define allR(x) (x).rbegin(), (x).rend()

#define pb push_back

#define eb emplace_back

#define mp make_pair

#define fst first

#define snd second

template <class Int> auto constexpr inf = numeric_limits<Int>::max()/2-1;

auto constexpr INF32 = inf<int32_t>;

auto constexpr INF64 = inf<int64_t>;

auto constexpr INF   = inf<int>;

#ifdef LOCAL

#include "debug.hpp"

#define dump(...) cerr << "[" << setw(3) << __LINE__ << ":" << __FUNCTION__ << "] ", dump_impl(#__VA_ARGS__, __VA_ARGS__)

#define say(x) cerr << "[" << __LINE__ << ":" << __FUNCTION__ << "] " << x << endl

#define debug if (1)

#else

#define dump(...) (void)(0)

#define say(x) (void)(0)

#define debug if (0)

#endif

template <class T> using pque_max = priority_queue<T>;

template <class T> using pque_min = priority_queue<T, vector<T>, greater<T> >;

template <class T, class = typename T::iterator, class = typename enable_if<!is_same<T, string>::value>::type>

ostream& operator<<(ostream& os, T const& v) { bool f = true; for (auto const& x : v) os << (f ? "" : " ") << x, f = false; return os; }

template <class T, class = typename T::iterator, class = typename enable_if<!is_same<T, string>::value>::type>

istream& operator>>(istream& is, T &v) { for (auto& x : v) is >> x; return is; }

template <class T, class S> istream& operator>>(istream& is, pair<T,S>& p) { return is >> p.first >> p.second; }

struct IOSetup { IOSetup() { cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(15); } } iosetup;

template <class F> struct FixPoint : private F {

    constexpr FixPoint(F&& f) : F(forward<F>(f)) {}

    template <class... T> constexpr auto operator()(T&&... x) const { return F::operator()(*this, forward<T>(x)...); }

};

struct MakeFixPoint {

    template <class F> constexpr auto operator|(F&& f) const { return FixPoint<F>(forward<F>(f)); }

};

#define MFP MakeFixPoint()|

#define def(name, ...) auto name = MFP [&](auto &&name, __VA_ARGS__)

template <class T, size_t d> struct vec_impl {

    using type = vector<typename vec_impl<T,d-1>::type>;

    template <class... U> static type make_v(size_t n, U&&... x) { return type(n, vec_impl<T,d-1>::make_v(forward<U>(x)...)); }

};

template <class T> struct vec_impl<T,0> { using type = T; static type make_v(T const& x = {}) { return x; } };

template <class T, size_t d = 1> using vec = typename vec_impl<T,d>::type;

template <class T, size_t d = 1, class... Args> auto make_v(Args&&... args) { return vec_impl<T,d>::make_v(forward<Args>(args)...); }

template <class T> void quit(T const& x) { cout << x << endl; exit(0); }

template <class T, class U> constexpr bool chmin(T& x, U const& y) { if (x > y) { x = y; return true; } return false; }

template <class T, class U> constexpr bool chmax(T& x, U const& y) { if (x < y) { x = y; return true; } return false; }

template <class It> constexpr auto sumof(It b, It e) { return accumulate(b,e,typename iterator_traits<It>::value_type{}); }

template <class T> int sz(T const& x) { return x.size(); }

template <class C, class T> int lbd(C const& v, T const& x) {

    return lower_bound(v.begin(), v.end(), x)-v.begin();

}

template <class C, class T> int ubd(C const& v, T const& x) {

    return upper_bound(v.begin(), v.end(), x)-v.begin();

}

template <class C, class F> int ppt(C const& v, F f) {

    return partition_point(v.begin(), v.end(), f)-v.begin();

}

// <<<



int32_t main() {

    int n; cin >> n;

    vector<int> a(n); cin >> a;



    const int M = *max_element(all(a)) + 5;

    vector<int> cnt(M);

    rep (i,n) {

        for (int x = a[i]; x < M; x += a[i]) {

            cnt[x]++;

        }

    }



    int ans = 0;

    rep (i,n) if (cnt[a[i]] == 1) ans++;

    cout << ans << endl;





}