#include <bits/stdc++.h>
using namespace std;
const int N = 1e5 + 5;
const int LIM = 1e8;
int n, k, a[N];
long long s[N], ans;
int main(){
ios_base::sync_with_stdio(0); cin.tie(0);
cin >> n >> k;
for (int i = 1; i <= n; ++i) cin >> a[i], s[i] = s[i - 1] + a[i];
sort(a + 1, a + n + 1);
int j = n, l = 1;
for (int i = 1; i <= k; ++i){
while (j && (a[j] / i) * 1LL * (a[j] + 2) > LIM)
--j;
if (a[j] < i) break;
while (a[l] < i) ++l;
for (int x = i; x <= a[j]; x += i){
int L = l, R = j, r = -1;
while (L <= R){
int mid = L + ((R - L) >> 1);
if (a[mid] < x + i){
r = mid;
L = mid + 1;
} else
R = mid - 1;
}
// cout << i << " " << x / i << "\t" << l << " " << r << "\t" << (x / i) * (s[r] - s[l - 1] + ((r - l + 1) << 1)) << "\n";
if (l <= r)
ans += (x / i) * 1LL * (s[r] - s[l - 1] + ((r - l + 1) << 1));
l = max(1, r + 1);
}
}
cout << ans;
}
