#include <stdio.h>

/* Part 4 */

int main() {
  int n;
  printf("Enter an integer: ");

  while(scanf("%d", &n)) {
    if(n <= 0) break;
    else printf("Divisors of %d:", n);

    int i, s = 0;
    for(i = 1; i < n; i++) {
      if(n % i == 0) {
        printf(" %d", i);
        s += i;
      }
    }

    if(n == s) printf("\n%d is a perfect number.", n);
    else if(n < s) printf("\n%d is an abundant number.", n);
    else printf("\n%d is a deficient number.", n);

    printf("\n\nEnter an integer: ");
  }

  return 0;
}