#include <stdio.h>
int main()
{
int e, i, res, num, sum, parada, divisor;
do
{
	scanf("%d", &num);
	divisor=num-1;
    if(num!=0){
               do{
                  if(num % divisor == 0){
                                         printf("%d ", divisor);
                                         }
                  divisor--;
                  }
while (divisor!=0);
                   }
    if(num!=0){
               sum=0;
	           for(i=1, parada=num/2+1; i<parada; i++) {
		                                               if(num%i==0) {
			                                                        sum+=i;
		                                                            }
                                                 }
	if(sum==num){
	             printf("\n%d es perfecto.\n", num);
	             }
	else
	{
	printf("\n%d no es perfecto.\n", num);
    }
}
}
while(num!=0);
	return 0;
}