#include <iostream>
#include <vector>
#include <cmath>
#define pb push_back

typedef long long ll;
using namespace std;

inline int readInt() {char c;while(c=getchar(),c!='-'&&(c<'0'||c>'9'));bool sign=(c=='-');if(sign)c=getchar();int n=c-'0';while(c=getchar(),c>='0'&&c<='9')n=10*n+c-'0';return(!sign)?n:-n;}

const int lim = 1e4;
bool p[lim];
vector<int> c;
ll a, n, t;

void Sieve() {
    c.pb(2);
 for (int i = 3; i <= lim; i += 2) {
     if (!p[i]) {
         c.pb(i);
         for (ll j = i * i; j <= lim; j += i)
             p[j] = 1;
     }
 }
}

ll dem(ll g) {
    int n = g;
 int d = 1, cnt;
 for (int i = 0; i < c.size(); ++i) {
  if (1ll * c[i] * c[i] > n) break;
  cnt = 1;
  while (n % c[i] == 0)
   n /= c[i], cnt++;
  d *= cnt;
 }
 if (n != 1) d *= 2;
 return d;
}

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
 
 Sieve();
 
 for (n = readInt(); n--; )
  a = readInt(), t += a*dem(a);
 cout << t;
}