#include <stdio.h>
void prim_div (int x) {
int i;
for (i = 3; i < x; i += 2) {
if ((x % i) == 0) {
printf("%i: %i, %i; ", x, i, x/i);
prim_div (i);
prim_div (x / i);
}
}
}
int main (void) {
int i;
int x;
x = 576172;
prim_div (x);
printf ("\n");
x = 712835;
prim_div (x);
printf ("\n");
x = 781238;
prim_div (x);
printf ("\n");
x = 812879;
prim_div (x);
printf ("\n");
return 0;
}