#include "bits/stdc++.h"
using namespace std;
#define ff first
#define ss second
#define pp pop_back
#define ll long long
#define pb push_back
#define pq priority_queue
#define ls(v) (ll)v.size()
#define all(v) v.begin(),v.end()
#define rall(v) v.rbegin(),v.rend()
#define wr cout << "------------------------" << endl
#define tt debug
const ll MAX = 1e8;
const ll N = 1e5 + 5;
ll a[N];
ll res[N];
ll cnt[N];
signed main(){
#ifdef parad0x
freopen("file.in","r",stdin);
#endif
#define prll(...) 42
ios::sync_with_stdio(false);cin.tie(nullptr);
ll n,k;
cin >> n >> k;
set<int>st;
for(ll i = 1;i<=n;++i)
cin >> a[i], st.insert(a[i]), cnt[a[i]] += 1;
ll ans = 0;
for(auto it:st){
ll sum = 0;
for(int j = 1;j<=k;++j){
ll x = it/j;
sum += x;
if(x * (it + 2) >= MAX){
ans += (MAX * cnt[it]);
sum -= x;
}
}
res[it] = sum;
}
for(ll i = 1;i<=n;++i){
ll sum = res[a[i]];
sum *= (a[i] + 2);
ans += sum;
}
cout << ans << endl;
return 0;
}
