/*
TASK:SUM
LANG:C
*/
#include<stdio.h>

main()
{     
      int i, n, br=0, a, b;
      scanf("%d", &n);
      for (i=0;i<=n/2;i++) if (n%i==i) br++;
      printf("%d", br);      
      printf("\n");
      return 0;
}

