题解 | #完全数计算#

#include<stdio.h>
int main()
{
    long n;
    long count,sum;
    while(scanf("%ld\n",&n)!=EOF)
    {
        count=0;
        for(long i=1;i<=n;i++)
        {
            sum=0;
            for(long j=1;j<i;j++)
            {
                if(i%j==0)
                    sum+=j;
            }
            if(i==sum)
                count++;
        }
        printf("%ld\n",count);
    }
}