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  1. #include <stdio.h>
  2.  
  3. int main() {
  4.     int i, j, k, a, b;
  5.  
  6.     for (a = 3; a <= 1500; a++) {
  7.         for (i = 1, j = 0; i <= a; i++) {
  8.             if (a % i == 0) {
  9.                 j += i;
  10.             }
  11.         }
  12.         for (b = 2; b <= a; b++) {
  13.             for (i = 1, k = 0; i <= b; i++) {
  14.                 if (b % i == 0) {
  15.                     k += i;
  16.                 }
  17.             }
  18.             if (j == b && k == a) {
  19.                 printf("%d:1\n", a);
  20.                 for (i = 2; i <= a; i++) {
  21.                     if (a % i == 0) {
  22.                         printf("%d\n", i);
  23.                     }
  24.                 }
  25.                 printf("%d\n\n", j);
  26.  
  27.                 printf("%d:1\n", b);
  28.                 for (i = 2; i <= b; i++) {
  29.                     if (b % i == 0) {
  30.                         printf("%d\n", i);
  31.                     }
  32.                 }
  33.                 printf("%d\n\n", k);
  34.             }
  35.         }
  36.     }
  37.     return 0;
  38. }
  39.  
Success #stdin #stdout 1.79s 5280KB
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https://ideone.com/SUZnha
language:
C (gcc 8.3)
created:
342 days ago
visibility:
public

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