#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;

signed main() {
#ifdef LOCAL
  assert(freopen("c.in", "r", stdin));
#endif
  int n;
  cin >> n;
  ll res = 0;
  for (int i = 0; i < n; ++i) {
    ll a;
    cin >> a;
    res += a;
    vector<ll> v;
    for (ll d = 2; d * d <= a; ++d) {
      if (a % d)
        continue;
      while (a % d == 0) {
        a /= d;
        v.push_back(d);
      }
    }
    if (a > 1) {
      v.push_back(a);
    }
    sort(v.begin(), v.end());
    reverse(v.begin(), v.end());
    ll mul = 1;
    for (auto x : v) {
      res += mul;
      mul *= x;
    }
  }
  cout << res << '\n';
}