#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;
int main() {  
    int n;
    long long a, res = 0;
    cin >> n;
    for (int i=0; i<n; i++) {
        cin >> a;
        vector<long long> ds;
        for (long long d=2; d*d<=a; d++) {
            while (a % d == 0) {
                ds.push_back(d);
                a /= d;
            }
        }
        if (a != 1) ds.push_back(a);
        reverse(ds.begin(), ds.end());
        long long sticks = 1;
        for (long long d: ds) {
            res += sticks;
            sticks *= d;
        }
        res += sticks;
    }
    cout << res << "\n";
    return 0;
}