#include<bits/stdc++.h>
using namespace std;
#define int long long
void solve()
{
    int n;cin>>n;
    int arr[n];
    for(int i=0;i<n;i++)cin>>arr[i];
    int ans=0;
    for(int i=0;i<n-1;i++)
    {
        for(int j=i+1;j<n;j++)
        {
            int prod = arr[i]*arr[j];
            int sum = arr[i]+arr[j];
            if(prod%sum==0)
            {
                //cout<<i<<" "<<j<<endl;
                ans++;
            }
        }
    }
    cout<<ans<<endl;
}
int32_t main()
{
    int t=1;
    //cin>>t;
    for(int i=1;i<=t;i++)
    {
        //cout<<"Case : "<<i;
        solve();
    }

}