#include<stdio.h>
int main()
{
     int i, j, k;
     for (i = 1; i<1000; i++)
     {
         int sum = 0;
         for (j = 1; j<i; j++)
         {
             if (i%j == 0){
                 sum += j;

            }
         }
             if (sum == i){
            printf("%d its factors are ", i);
             for (k = 1; k<i; k++)
        {
            if (i%k == 0){
                printf("%d ", k);
                }
             }
         printf("\n");
    
        }
     }
     return 0;
}