codeforces_croc_D

// codeforces_crok_D.cpp : Defines the entry point for the console application.
//

#include <iostream>
#include <vector>
#include <cmath>
using namespace std;
int main()
{
	vector<long long> v;
	vector<pair<long long,bool> > mas;
	for(int i=1;i*i<5*1e+3;i++)
	{
		v.push_back(i*i);
	}
	long long ans=0;
	int a,n;
	cin>>a>>n;
	for(int i=0;i<n;i++)
	{
		mas.push_back(make_pair(a+i,false));
	}
	for(int i=0;i<n;i++)
	{
		for(int j=0;j<v.size();j++)
		{
			if((mas[i].first%v[v.size()-1-j]&&mas[i].second==false)==0)
			{
				for(long long k=1;k*mas[i].first<a+n;k++)
				{
					double temp = sqrt(double(k*mas[i].first));
					if(temp==floor(temp))
					{
						ans+=1;
						mas[k*mas[i].first-a].second=true;
					}
					else if(sqrt(double(k))==floor(double(k))&&sqrt(double(k))>sqrt(double(v[v.size()-1-j])))
					{
						ans+=sqrt(double(v[v.size()-1-j]));
						mas[k*mas[i].first-a].second=true;
					}
					else
					{
						mas[k*mas[i].first-a].second=true;
						ans+=(k*mas[i].first)/v[v.size()-1-j];
					}
				}
				break;
			}
		}
	}
	cout<<ans;
	return 0;
}