#include <bits/stdc++.h>

using namespace std;

long ls(long x){
  long r = x;
  if(x > 1)
    r++;
  for(long i=2; i*i<=x; i++){
    if(x%i == 0){
      x /= i;
      r += x;
      i--;
    }
  }
  return r;
}

long longestSequence(vector <long> a) {
  long res = 0;
  for(long x : a)
    res += ls(x);
  return res;
}

int main() {
    int n;
    cin >> n;
    vector<long> a(n);
    for(int a_i = 0; a_i < n; a_i++){
       cin >> a[a_i];
    }
    long result = longestSequence(a);
    cout << result << endl;
    return 0;
}