#include <stdio.h>
int main(){
   int number,i,result=0;
   printf("enter the number\n:");
   scanf("%d",&number);
    printf("\n Input number is = %d",number);
    scanf("%d",&number);
   for(i=1;i<=number;i++){
      if(number%i==0)
         result=result+i;
   }
   if(result==2*number) 
      printf("\nThe input is a perfect number");
   else
      printf("\nThe input is not a perfect number");
}