2i3j5k.c

#include <stdio.h>
#include <math.h>

int calc(int i,int j,int k){
	return pow(2,i) * pow(3,j) * pow(5,k);
}

int main(void){
	int count = 0;
	int amari;
	int multiply = 1;
	int i,j,k;
	while(count < 100){
		i=j=k=0;

		int n = multiply;

		while(n % 2 == 0 && n >= 2){
			i++;
			n /= 2;
		}

		while(n % 3 == 0 && n >= 3){
			j++;
			n /= 3;
		}

		while(n % 5 == 0 && n >= 5){
			k++;
			n /= 5;
		}
		if(n == 1){
			printf("%d = %d %d %d\n",30 * multiply,i,j,k);
			count++;
		}

		multiply++;
	}
}