题解 | #质数因子#

#import <Foundation/Foundation.h>

int main(int argc, char* argv[]) {
    int num;
    scanf("%d", &num);
    for (int i = 2; i * i <= num; i++) {
        while (num % i == 0) {
            printf("%d ", i);
            num /= i;
        }
    }
    if (num > 1) {
        printf("%d", num);
    }
    return 0;
}