#include <iostream>
#include <vector>
#include <map>
#include <set>
using namespace std;
typedef long long ll;



int main() {
    ll x, n;
    cin >> x >> n;

    for(int i = 0; i < n; i++) {
        ll koren = sqrt(x);
        ll prv_delitel = 1;

        for(ll j = 2; j <= koren; j++) {
            if(x % j == 0) {
                prv_delitel = x / j;
                break;
            }
        }


        x += prv_delitel;

    }
    cout << x << endl;

    return 0;
}