#include <bits/stdc++.h>

using namespace std;
ifstream fin ("pairs.in");
ofstream fout ("pairs.out");
int f[1000001],v[1000001],x[1000001];
int main()
{
    for (int i=2; i<=1000000; i++)
    {
        for (int j=i; j<=1000000; j+=i)
        {
            if (x[j]==1)
                f[i]++;
        }
    }
    int n;
    fin>>n;
    for (int i=1; i<=n; i++)
    {
        fin>>v[i];
        x[v[i]]++;
    }
    return 0;
}