public class Test5 {

    public static void main(String[] args) {

        int i, n, sum;
        for (n = 1; n <= 500; n++) {
            sum = 0;
            for (i = 1; i <= n/2; i++) {
                if (n % i == 0) {
                    sum += i;
                    if (n == sum) {
                        System.out.println(n);
                    }
                }
            }
        }
    }
}

int i, n, sum;
        for (n = 1; n <= 500; n++) {
            sum = 0;
            for (i = 1; i <= n/2; i++) {
                if ((n % i) == 0) {
                    sum += i;
                }
            }
                    if (n == sum) {
                        printf("%d,%d\n",n,i);//放for语句外面~~呵呵~~
                    }
        }

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#include<stdio.h>
void main()
{
    int i, n, sum;
    for (n = 1; n <= 500; n++) {
        sum = 0;
        for (i = 1; i <= n/2; i++) {
            if ((n % i) == 0) {
                sum += i;
            }
        }
        if (n == sum) {
            printf("%d\n",n);
        }
    }
}