# include <bits/stdc++.h>
/// my holy template
# define F first    
# define S second
# define mp make_pair
# define pii pair<int,int>         
/// eveything goes according to my plan
# define long long long  
# define pb push_back
# define sz(a) (int)(a.size())
# define vec vector
/// countdown BEGAN. 10 , 9 , 8 ...
# define y1    Y_U_NO_y1
# define left  Y_U_NO_left
# define right Y_U_NO_right
/// dzyn dzyn dzyn   
const int Mod = (int)1e9 + 7;
const int MX = 1073741822;
const long MXLL = 9223372036854775807;
const int Sz = 1110111;

using namespace std;

inline void Read_rap () {
  ios_base :: sync_with_stdio(0);
  cin.tie(0); cout.tie(0);
}
inline void randomizer3000 () {
  unsigned int seed;
  asm("rdtsc" : "=A"(seed));
  srand(seed);
}
unordered_map <long, long> dp;

long calc (long n) {
  vec<long> p;
  for (long i = 2; i * i <= n; i++) {
    if (n % i == 0) {
      while (n % i == 0) {
        p.pb (i);
        n /= i;
      }
    }
  }
  if (n > 1)
    p.pb (n);
     
  long ans = 1;  
  for (auto x : p)
    ans = ans * x + 1;
  return ans;
}
int main() 
{
  Read_rap ();   
  int t; cin >> t;
  long sum = 0;
  while (t--) {
    long n; cin >> n;
    sum += calc(n);
  }
  cout << sum;

  return 0;
} 










// Coded by Z...