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

int main()
{
    int a,b;
    cin >> a >> b;

    for (int i = a; i <= b; i++){
        int sum = 0;
        for (int j = 1; j < i; j++){
            if (i%j == 0)
                sum += j;
        }
        if (sum == i)
            cout << i << endl;
    }
    return 0;
}