问题 1017: C语言程序设计教程（第三版）课后习题6.7

import java.util.Scanner;

public class Prog1017 {

    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);

        int n = scan.nextInt();

        for (int i = 1; i <= n; i++) {

            int sum = 0;

            boolean b = false;

            int y = 0;

            for (int j = 1; j <= i; j++) {

                if (i % j == 0) {

                sum += j;

                if (sum == i && j == i / 2) {

                b = true;

                y = i;

                System.out.print(i + " its factors are ");

                }

                }

            }

            if (b) {

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

                    if (y % j == 0) {

                        System.out.print(j + " ");

                    }

                }

                System.out.println();

            }

        }

    }

}