// Slower C++ solution:
#include <bits/stdc++.h>

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

using namespace std;

using ll = long long;

using P = pair<int,int>;



const int M = 1000005;



int main() {

  int n;

  cin >> n;

  vector<int> a(n);

  rep(i,n) cin >> a[i];

  vector<int> cnt(M);

  for (int x : a) {

    if (cnt[x] != 0) {

    	cnt[x] = 2;

      	continue;

    }

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

  }

  int ans = 0;

  for (int x : a) {

    if (cnt[x] == 1) ans++;

  }

  cout << ans << endl;

  return 0;

}


// Faster C++ solution for the same problem (measured speedup: 10.157659967615393x):
#include "bits/stdc++.h"

using namespace std;

using ll = long long;



template <typename T>

void print_vec(const vector<T>& v, bool is_reverse=false, ll num=0){

  if(num == 0) num = (ll)v.size();

  cout << endl; cout << "i=  ";for(ll i=0; i<num; i++) cout << i << "   ";cout << endl;  

  cout << "    ";

  if(is_reverse) for(ll i=num-1; i>=0; i--){ cout<<v[i]; if(i!=0) cout<<"   ";}

  else for(ll i=0; i<num; i++){ cout<<v[i]; if(i!=num-1) cout<<"   ";}

  cout << endl;

}



// template <typename T>

// void print_pairvec(const vector<T> &v, ll num=0){

//   if(num == 0) num = (ll)v.size();

//   cout << endl; for(ll i=0; i<num; i++){ cout << v[i].first << " " << v[i].second << endl;}

// }

template <typename T>

void print_pairvec(const T &_pair, ll num=0){

  cout << endl; for(pair<ll, int> x: _pair){ cout << x.first << " " << x.second << endl;}

}



template <typename T>

void print_vec2(const vector<vector<T>>& v){

  cout << endl; cout << "       ";

  for(ll i=0; i<v[0].size(); i++) cout << i << "   "; 

  cout << endl;

	for(ll i=0; i<v.size(); i++){

		cout << "i=" << i << ":   ";

		for(ll j=0; j<v[i].size(); j++){

			if(v[i][j] == 0) cout << "\x1B[0m" << v[i][j] << "   ";

      else cout << "\x1B[31m" << v[i][j] << "   ";//https://stackoverrun.com/ja/q/12618775

		}

		cout << "\x1B[0m" << endl;

	}

}



struct Eratosthenes{

  vector<ll> sieve;// sieve[i]: 数字iがエラトステネスで篩落とされた時の素数



  Eratosthenes(ll n): sieve(n+1){

    for(int i=0; i<=n; i++) sieve[i] = i;

    for(ll i=2; i*i<=n; i++){

      if(sieve[i] < i) continue;

      for(ll j=i*i; j<=n; j+=i) sieve[j] = min(sieve[j], i);

    } 

  }



  vector<ll> prime_divisors(ll x, bool tmp=false){

    vector<ll> res(1,1);//back()のところで ひっかかるので1を入れとかないとダメ

    while(x > 1){

      if(res.back() != sieve[x]) res.push_back(sieve[x]);

      x /= sieve[x];

    }

    return res;

  }



  map<ll, int> prime_divisors(ll x, int tmp=0){

    map<ll, int> mp;

    while(x > 1){

      mp[sieve[x]]++;

      x /= sieve[x];

    }

    return mp;

  }

};



int main(){

  ll N;

  cin >> N;

  vector<ll> A(N);

  for(ll i=0; i<N; i++) cin >> A[i];



  sort(A.begin(), A.end());//82行目のbreakを入れないとTLEになるらしく，それならsortしないといけない

  // const ll INF  =1e6+1;// sortじゃなくてこっちがTLEの原因?

  const ll INF = A.back()+1;

  vector<ll> vec(INF, 0);

  for(ll i=0; i<N; i++){

    for(ll j=1; j*A[i]<=INF; j++){

      vec[A[i]*j]++;

      // if(vec[A[i]*j] >= 2) break;// これいれたらWA?

    }

  }

  ll ans = 0;

  for(ll i=0; i<N; i++){

    if(vec[A[i]] == 1) ans++;

  }

  cout << ans << endl;

  return 0;

}