OJ Board

I got TLE for 11728....what's wrong with my code....

#include<stdio.h>
int main()
{
long i,j,k=0,n,s,m=-1,max;
while(scanf("%ld",&n)==1)
{
k++;
if(n==0)
break;
max=-1;
for(i=1;i<=n;i++)
{
s=0;
for(j=1;j<=i;j++)
{
if(i%j==0)
{
s+=j;
}
}
if(n==s)
{
if(i>max)
{
max=i;
}
}
}
printf("Case %ld ...