#include <iostream>

using namespace std;

int main()
{
    long long x;
    cin >> x;
    int n;
    cin >> n;

    for(int i = 0; i < n; i++) {
        long long najgolem_delitel = 1;
        for(long long j = 2; j * j <= x; j++) {
            if(x % j == 0) {
                najgolem_delitel = x / j;
                break;
            }
        }
        x += najgolem_delitel;
    }
    cout << x << endl;

    return 0;
}