#include<bits/stdc++.h>
#define int long long
using namespace std;

const int N = 1e6;

int ans, x, n;
vector < int > v;

int f(int x){
    if(x == 1){
        return 1;
    }
    int d = 2, mx = 0, n = x;
    while(d * d <= x){
        if(x % d == 0){
            x /= d;
            mx = max(mx, d);
        }
        else{
            d++;
        }
    }
    if(x > 1){
        mx = max(mx, x);
    }
    return f(n / mx) * mx + 1;
}

signed main(){
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    cin >> n;
    for(int i = 1; i <= n; i++){
        cin >> x;
        ans += f(x);
    }
    cout << ans;
}