#include <iostream>
#include <algorithm>
using namespace std;

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

    for(int i = 0; i < n; i += 1) {
        int najgolem_delitel = 1;
        for(int j = 1; j < x; j += 1) {
            if(x % j == 0) {
                najgolem_delitel = j;
            }
        }
        x += najgolem_delitel;

    }
    cout << x << endl;
    return 0;
}