#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;

int main() {  
    int n;
    cin >> n;
  
    vector <long long> a(n);
    for (int i = 0; i < n; i++) {
        cin >> a[i];
    }
    long long c = 0;
    for(int i=0;i<n;i++) {
        long long q = a[i];
        vector<long long> list;
        long long d =2;
        while(q>1) {
            while(q%d==0) {
                list.push_back(d);
                q = q/d;
            }
            d++;
            if(d*d>q) {
                if(q>1)
                    list.push_back(q);
                break;
            }
        }
        q = a[i];
        long long l = list.size();
        for(int i=0;i<l;i++) {
            c = c+q;
            q = q/list[i];
        }
        c++;
    }
    cout<<c;
    return 0;
}