#define _CRT_SECURE_NO_WARNINGS
#define debug(l) cerr<<#l<<' '<<l<<'\n';
#include "bits/stdc++.h"
using namespace std;
#define all(a) a.begin(), a.end()
typedef long long ll;
typedef pair<ll, ll> pll;
typedef long double ld;
const int N = 4e5 + 1;
ll cnt[N] = {}, pref[N], n;
signed main() {
#ifdef _DEBUG
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#endif
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    cin >> n;
    for (int i = 0; i < n; i++) {
        ll x;
        cin >> x;
        cnt[x]++;
    }
    pref[0] = 0;
    for (int i = 1; i < N; i++) {
        pref[i] = pref[i - 1] + cnt[i];
    }
    ll ans = 0;
    for (int i = 1; i < N; i++) {
        ll pre_ans = 0;
        if (cnt[i]) {
            for (int j = i; j + i <= N; j += i) {
                pre_ans += 1LL * (pref[j + i - 1] - pref[j - 1]) * j;
            }
        }
        ans = max(ans, pre_ans);
    }
    cout << ans << '\n';
}