import java.io.;
import java.util.;
public class Main{
public static void main(String args[]) throws Exception{
Scanner cin = new Scanner(System.in);
var a = cin.nextInt();
var b = cin.nextInt();
System.out.println(lcm(a,b));
}
public static int lcm(int a, int b){
int s = 0;
for(int i = 1; i <= a * b; i++){
if(i % a == 0 && i % b == 0){
return i;
}
}
return -1; //不可能的情况
}
}