Perfect Factor

///C program that finds and prints perfect numbers with their factors:
#include <stdio.h>

int is_perfect(int n) {
    int sum_of_factors = 1;
    for (int i = 2; i * i <= n; i++) {
        if (n % i == 0) {
            sum_of_factors += i + n / i;
        }
    }
    return sum_of_factors == n;
}

void find_and_print_perfect_numbers() {
    for (int num = 2; num <= 10000; num++) {
        if (is_perfect(num)) {
            printf("%d=", num);
            for (int factor = 1; factor < num; factor++) {
                if (num % factor == 0) {
                    printf(" %d", factor);
                }
            }
            printf(" %d\n", num);
        }
    }
}

int main() {
    find_and_print_perfect_numbers();
    return 0;
}