#include <bits/stdc++.h>
using namespace std;
const long long mxn = 5e5 + 123;
const long long inf = 1e9;
const long long mod = 998244353;
bool om[mxn];
vector<long long> v;
long long n, mn = 1e18;
;
int main() {
  int n, m;
  cin >> n >> m;
  for (int i = 1; i <= n; i++)
    if (n % i == 0) v.push_back(i);
  for (int i = 0; i < v.size(); i++) {
    if (n / v[i] < m) mn = min(mn, (v[i] * m) + (n / v[i]));
  }
  cout << mn;
  return 0;
}
