#include<iostream>
#include<vector>
#include<string>
#include<cmath>
#include<algorithm>
#include<functional>
#include<numeric>
#include<queue>
#include<stack>
#include<map>
#include<unordered_map>
#include<set>
#include<bitset>
#include<random>

#pragma region
using namespace std;
#define FOR(i,r,n) for(ll i = (ll)(r); i < (ll)(n); i++)
#define rep(i,n) FOR(i,0LL,n)
#define RFOR(i,r,n) for(ll i=(ll)(n-1);i>=r;i--)
#define rrep(i,n) RFOR(i,0LL,n)
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define COUNT(a,y,x) upper_bound(all(a), y) - lower_bound(all(a), x)
#define UNIQUE(a) sort(all(a)); a.erase(unique(all(a)), a.end())
#define pb push_back
typedef long long int ll;
typedef vector<ll> vll;
typedef vector<vll> vvll;
typedef pair<ll, ll> pll;
typedef vector<pll> vpll;
typedef vector<string> vs;
typedef map<ll, ll> MAP;
const ll inf = 1LL << 62;
const ll mod = 1000000007LL;
//const ll mod = 998244353LL;

ll n = 0, m = 0, ans = 0, tmp = 0, ma = -inf, mi = inf;
string s;
bool ok;
ll dx[9] = { 0,1,0,-1,0,1,1,-1,-1 }, dy[9] = { 0,0,1,0,-1,1,-1,1,-1 };
#define endl '\n'
#pragma endregion
#define MAX 222222



bool visited[MAX * 5];

vll pr;
bool is[5 * MAX + 1];

void AllPrime(ll x) {
  rep(i, x + 1) is[i] = true;
  is[0] = false;
  is[1] = false;
  rep(i, x + 1) {
    if (is[i]) {
      pr.pb(i);
      for (ll j = 2 * i; j <= x; j += i) is[j] = false;
    }
  }
}

void dfs(ll cur) {
  visited[cur] = true;

  rep(i, pr.size()) {
    if (cur == pr[i]) continue;
    if (cur%pr[i] || visited[cur / pr[i]]) continue;
    dfs(cur / pr[i]);
  }
  if (!is[cur]) return;
  rep(i, pr.size()) {
    ll x = cur * pr[i];
    if (x > n) break;
    if (visited[x]) continue;
    dfs(x);
  }
}


int main(void) {
  ios::sync_with_stdio(false); cin.tie(0);


  cin >> n >> m;
  AllPrime(n + 1);
  dfs(m);
  FOR(i, 1, n + 1) ans += visited[i];
  cout << ans << endl;





  return 0;
}