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  1. #include <stdio.h>
  2. #include <math.h>
  3. int limit, j, n, sum=1, i=2, mu;
  4. int Prime(int x) {
  5.     if (x<2) return 0;
  6.     limit=sqrt(x);
  7.     for (j=2;j<=limit;j++) {
  8.         if (x%j==0) return 0;
  9.     }
  10.     return 1;
  11. }
  12. int main () {
  13.     scanf("%d", &n);
  14.     if (n<2) printf("1");
  15.     else {
  16.         while (n!=1) {
  17.             if (n%i==0 && Prime(i)) {
  18.                 mu=0;
  19.                 while (n%i==0) {
  20.                     mu++;
  21.                     n/=i;
  22.                 }
  23.                 sum*=mu+1;
  24.             }
  25.             i++;
  26.         }
  27.     }
  28.     printf("%d", sum);
  29.     return 0;
  30. }
  31.  
Success #stdin #stdout 0.01s 5404KB
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https://ideone.com/TDtNf2
language:
C (gcc 8.3)
created:
1 year ago
visibility:
secret

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