C++ :

#include<bits/stdc++.h>
using namespace std;

int gcd(int x,int y)
{
	if(x%y==0)	return y;
	else	return gcd(y,x%y);
} 

int n,a,b;

int main()
{

cin>>a>>b>>n;

int q=a*b/gcd(a,b);


cout<<n/q;



return 0;
}