#include <stdio.h>
int main (void)
{
    int a ,i ,b ;
    fprintf(stdout,"请输入一个数值:\n");

    fscanf(stdin,"%d",&a);

    fprintf(stdout,"其约数为:\n");

    for (i=1;i<=a;i++)
    {
        for (b=1;b<=a;b++)
        {

        if (a%(i*b)==0)                                    
        {   
            fprintf(stdout,"%d ",b);
        }
        }
    }
    return 0;
}
   运行有问题啊