#include<stdio.h>
#include<conio.h>
main()
{
int
n,s=0,i=1;
clrscr();
printf("Enter
a number\n");
scanf("%d",&n);
while(i<n)
{
if(n%i==0)
{
s=s+i;
}
i++;
}
if(s==n)
{
printf("\n%d
is a perfect number.",n);
}
else
{
printf("\n%d
is not a perfect number",n);
}
}
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