完数.txt

/*
*一个数恰好等于它的因子之和，这个数就是“完数”，
例如6=1+2+3，编程找出1000以内的所有完数
*
*/

public class WanSuan {
	public static void main(String[] args) {
		int k = 2;
		int num = 0;
		int temp = 1;
		int j = 0;
		for(num = 1; num <= 1000; num++) {
			k = 2;
			temp = 1;
			j = num;
			while(j >= k) {
				if(j % k == 0) {
					temp += k;
					j = j / k;
				}else{
					k++;
				}
			}
			if(temp == num) {
				System.out.println(temp);
			}
		}
	}
}