#include <stdio.h>
 
int main() {
    // 1から10000までの整数を調べる
    for (int n = 1; n <= 10000; n++) {
        int	k = 0;
 
        // nの約数を求めて合計する
        for (int i = 1; i < n; i++) {
            if (n % i == 0) {
                k+= i;
            }
        }
 
        // 約数の合計がnと等しければ完全数
        if (k == n) {
            printf("%d\n", n);
        }
    }
 
    return 0;
}

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