Codeforces_731_F

#include<iostream>
#include<cstring>
#include<cstdio>
#include<algorithm>
using namespace std;

int cnt[200005] = {0},n;

int main()
{
    scanf("%d",&n);
    int temp,maxx = 0;
    while(n--)
    {
        scanf("%d",&temp);
        maxx = max(maxx,temp);
        cnt[temp]++;
    }
    for(int i = 2;i <= maxx;i++)    cnt[i] += cnt[i-1];
    long long ans = 0,tempmax;
    for(int i = 1;i <= maxx;i++)
    {
        if(cnt[i] != cnt[i-1])
        {
            tempmax = 0;
            for(int j = i;j <= maxx;j += i)    tempmax += (long long)j*(cnt[min(j+i-1,maxx)]-cnt[j-1]);
            ans = max(tempmax,ans);
        }
        
    }
    printf("%I64d\n",ans);
    return 0;
}