#![allow(unused_imports)]
// use itertools::Itertools;
// use proconio::input;
// use proconio::marker::*;
use std::cmp::Reverse;
use std::collections::*;

fn main() {
    input! {
        n:usize,
        p:usize,
    }

    let mut uf = UnionFindTree::new(n + 1);
    for i in 2..=n {
        for j in (i..=n).step_by(i) {
            uf.unite(i, j);
        }
    }

    let ans = uf.size(p);
    println!("{}", ans);
}

use unionfindtree::*;
mod unionfindtree{
    pub struct UnionFindTree {
        par: Vec<usize>,
        rank: Vec<usize>,
        size: Vec<usize>,
    }
    
    impl UnionFindTree {
        pub fn new(n: usize) -> Self {
            Self {
                par: (0..n).collect::<Vec<_>>(),
                rank: vec![0; n],
                size: vec![1; n],
            }
        }
    
        #[allow(dead_code)]
        pub fn same(&mut self, v1: usize, v2: usize) -> bool {
            self.root(v1) == self.root(v2)
        }
    
        #[allow(dead_code)]
        pub fn size(&mut self, v: usize) -> usize {
            let v_root = self.root(v);
            self.size[v_root]
        }
    
        #[allow(dead_code)]
        pub fn root(&mut self, v: usize) -> usize {
            if self.par[v]!=v{
                self.par[v]=self.root(self.par[v]);
            }
    
            self.par[v]
        }
    
        pub fn unite(&mut self, v1: usize, v2: usize) {
            let mut v1_root = self.root(v1);
            let mut v2_root = self.root(v2);
            if v1_root == v2_root {
                return;
            }
    
            if self.rank[v1_root] < self.rank[v2_root] {
                std::mem::swap(&mut v1_root,&mut v2_root);
            }
    
            self.par[v2_root] = v1_root;
            self.size[v1_root] += self.size[v2_root];
    
            if self.rank[v1_root] == self.rank[v2_root] {
                self.rank[v1_root] += 1;
            }
        }
    
        #[allow(dead_code)]
        pub fn nofcc(&mut self) -> usize {
            let n = self.par.len();
            (0..n)
                .map(|v| self.root(v))
                .collect::<std::collections::HashSet<usize>>()
                .len()
        }
    }
    
}

mod input {
    #[macro_export]
    macro_rules! input {
        (source = $s:expr, $($r:tt)*) => {
            let mut iter = $s.split_whitespace();
            input_inner!{iter, $($r)*}
        };
        ($($r:tt)*) => {
            let s = {
                use std::io::Read;
                let mut s = String::new();
                std::io::stdin().read_to_string(&mut s).unwrap();
                s
            };
            let mut iter = s.split_whitespace();
            input_inner!{iter, $($r)*}
        };
    }

    #[macro_export]
    macro_rules! input_inner {
        ($iter:expr) => {};
        ($iter:expr, ) => {};

        ($iter:expr, $var:ident : $t:tt $($r:tt)*) => {
            let $var = read_value!($iter, $t);
            input_inner!{$iter $($r)*}
        };
    }

    #[macro_export]
    macro_rules! read_value {
        ($iter:expr, ( $($t:tt),* )) => {
            ( $(read_value!($iter, $t)),* )
        };

        ($iter:expr, [ $t:tt ; $len:expr ]) => {
            (0..$len).map(|_| read_value!($iter, $t)).collect::<Vec<_>>()
        };

        ($iter:expr, chars) => {
            read_value!($iter, String).chars().collect::<Vec<char>>()
        };

        ($iter:expr, usize1) => {
            read_value!($iter, usize) - 1
        };

        ($iter:expr, $t:ty) => {
            $iter.next().unwrap().parse::<$t>().expect("Parse error")
        };
    }
}