#include <stdio.h>
int main () {
int number,sum,i;
for(number = 2; number < 1000;number++)
{
sum = 0;
for(i = 1;i < number;i++)
{
if((number % i) == 0)
{
sum += i;
}
}
if(sum == number)
{
printf("%d :its factors are ", number);
for(i = 1;i < number; i++)
{
if(number % i == 0)
{
printf("%d,",i);
}
}
printf("\n");
}
}
return 0;
}