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

long long calc(long long A) {
    long long res = 1;
    for (int s = 2; 1LL*s*s <= A; s++) if (A % s == 0) {
        while (A % s == 0) {
            A /= s;
            res = res*s + 1;
        }
    }
    if (A > 1) {
        res = res*A + 1;
    }
    return res;
}

int main() {
    int n;
    cin >> n;
  
    vector <long long> a(n);
    long long res = 0;
    for (int i = 0; i < n; i++) {
        cin >> a[i];
        res += calc(a[i]);
    }

    cout << res << endl;
 
    return 0;
}