#include<bits/stdc++.h>
#define int long long 
#define pt putchar
using namespace std;
typedef long long ll;
const int N=100;
int read();
void write(int x);
int n,k;

int v[N],c[N];

int calc(int o){
	if(o==2){
		int v=sqrt((double)n)+10;
		while(v*v>n){
			v--;
		}
		return v;
	}
	for(int i=1;i<=n;i++){
		__int128 v=1;
		for(int j=1;j<=o;j++){
			v*=i;
		}
		if(v>n){
			return i-1;
		}
	}
	return -1;
}

signed main(){
	//freopen("ex_power5.in","r",stdin);
	n=read();k=read();
	if(k==1){
		write(n);return 0;
	}
	if(n==1){
		write(1);return 0;
	}
	int ans=0;
	for(int i=k;i<=60;i++){
		v[i]=calc(i)-1;
		int sc=0;
		for(int j=k;j<i;j++){
			if(i%j==0){
				sc+=c[j];
			}
		}
		//printf("%d:%lld %lld\n",i,sc,v[i]);
		c[i]=1-sc;
		ans+=v[i]*c[i];
	}
	write(ans+1);
	return 0;
}

int read(){
	int x=0,f=1;
	char c=getchar();
	while(c<'0'||c>'9'){
		if(c=='-'){
			f=-1;
		}
		c=getchar();
	}
	while('0'<=c&&c<='9'){
		x=x*10+c-'0';
		c=getchar();
	}
	return x*f;
}
void write(int x){
	if(x<0){
		pt('-');
		x=-x;
	}
	if(x>9){
		write(x/10);
	}
	pt(x%10+'0');
}