View Code of Problem 93

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