一个数恰好等于它的因子之和，这个数就称作完数。例如：6=1+2+3;编程序找出1000之内的完数。

include<stdio.h>

void Factor(int num);

int main(void){

for(int i=1;i<=1000;i++){
    Factor(i);
}

}

void Factor(int num){
int count=0;
int sum=0;

for(int i=1;i<=num/2;i++){

if(num%i==0){
    sum+=i;
    count++;
}

}

//output factor
if(sumnum){
printf("%d its factors are ",num);
int i;
for(i=1;i<=num/2&&count>1;i++){
if(num%i0){
printf("%d,",i);
count--;
}
}

//output the last factor.
    while(i<=num/2){
         if(num%i==0)
        printf("%d\n",i);

        i++;
    }
}

}