C++ :

#include<bits/stdc++.h>
using namespace std;
long long a,b,c,a1,b1;
int main()
{
//	freopen("1017.in","r",stdin);
//	freopen("1017.out","w",stdout);	
	cin>>a>>b;
	a1=a,b1=b;
	c=a%b;
	while(c!=0)
	{
		a=b;
		b=c;
		c=a%b;
	} 
	cout<<a1*b1/b;;
	return 0;
}