#include<stdio.h>
int factorsum(int number);
int main(void)
{
int m,n,i;
printf("Input m:");
scanf("%d",&m);
printf("Input n:");
scanf("%d",&n);
for(i=m;i<=n;i++){
if(factorsum(i)==i)
printf("%d\n",i);
}
return 0;
}
int factorsum(int number)
{
int i,sum;
sum=0;
for(i=1;i<=number;i++){
if(number%i==0)
sum=sum+i;
}
return sum;
}