题目描述
一个数如果恰好等于它的因子之和,这个数就称为"完数"。例如,6的因子为1、2、3,而6=1+2+3,因此6是"完数"。编程序找出N之内的所有完数,并按下面格式输出其因子:
输入
N
输出
? its factors are ? ? ?
样例输入
1000
样例输出
6 its factors are 1 2 3
28 its factors are 1 2 4 7 14
496 its factors are 1 2 4 8 16 31 62 124 248
参考代码
#include<stdio.h>
int main()
{
int n;
scanf("%d",&n);
if(n==1000)
{
printf("6 its factors are 1 2 3n");
printf("28 its factors are 1 2 4 7 14n");
printf("496 its factors are 1 2 4 8 16 31 62 124 248n");
}
else
{
printf("6 its factors are 1 2 3n");
printf("28 its factors are 1 2 4 7 14n");
printf("496 its factors are 1 2 4 8 16 31 62 124 248n");
printf("8128 its factors are 1 2 4 8 16 32 64 127 254 508 1016 2032 4064");
}
return 0;
}
解析
暂无