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

vector<tuple<ll, ll, ll>> Enum_floor(ll n) {
  vector<tuple<ll, ll, ll>> ret;
  ll l = 1;
  while(l <= n) {
    ll q = n / l, r = n / q + 1;
    ret.push_back({l, r, q});
    l = r;
  }
  return ret;
}

int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);

  ll N;
  cin >> N;

  vector<ll> A(N), c(200001, 0);
  ll ans = 0;
  for(auto &i : A) {
    cin >> i;
    ans += i * N;
    c[i] += i;
  }

  for(ll i = 0; i < 200000; i++) { c[i + 1] += c[i]; }

  for(auto &i : A) {
    for(auto &[l, r, q] : Enum_floor(i)) { ans -= (c[--r] - c[--l]) * q; }
  }

  cout << ans << "\n";
}