#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int, int> P;
typedef pair<ll, ll> Pll;
using Graph = vector<vector<int>>;
using Graphl = vector<vector<ll>>;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define Rep(i, k, n) for (int i = k; i < (int)(n); i++)
#define RRep(i, k, n) for (int i = k; i > (int)(n); i--)
#define COUT(x) cout << #x << " = " << (x) << " (L" << __LINE__ << ")" << endl
#define ALL(a)  (a).begin(),(a).end()
#define rALL(a)  (a).rbegin(),(a).rend()
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
template<class T> void PrintVector(const vector<T> &vec) {for (auto val : vec) cout << val << " "; cout << endl;}
const long long INF = 1LL << 60;
const long long minusINF = -(1LL << 40);
const int MOD = 1000000007;
const double PI = acos(-1); //3.14~
const int dx[4] = {1, 0, -1, 0};
const int dy[4] = {0, 1, 0, -1};

vector<ll> divisor(ll n)
{
    vector<ll> ret;
    for (ll i = 1; i * i <= n; i++)
    {
        if (n % i == 0)
        {
            ret.push_back(i);
            if (i * i != n) ret.push_back(n / i);
        }
    }
    sort(ret.begin(), ret.end());
    return ret;
}

template<class T> int former(const vector<T> &v, T x) {
    return upper_bound(v.begin(), v.end(), x) - v.begin() - 1;
}

int main()
{
    ll n, m; cin >> n >> m;
    vector<ll> a = divisor(m);
    cout << a[former(a, m/n)] << endl;
}
#include <iostream>
#include <vector>
#include <algorithm>
#include <cmath>
#include <string>
#include <queue>
#include <cstdio>
#include <stack>
#include <set>
#include <map>
#include <iomanip>
#include <utility>
#include <tuple>
#include <functional>
#include <bitset>
#include <cassert>
#include <complex>
#include <stdio.h>
#include <time.h>
#include <numeric>
#include <unordered_map>
#include <unordered_set>
#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
# define ll int64_t
# define str string
# define rep(i,n) for(ll i=0;i<n;i++)
# define rrep(i,n) for(ll i=1;i<=n;i++)
# define ALL(x) (x).begin(), (x).end()
# define SZ(x) ((int)(x).size())
# define pb push_back
# define mod 1000000007
# define PI 3.141592653589793
# define vec vector
#define dump(x) cerr<<#x<<"="<<x<<endl
using namespace std;



#define INF 2000000000
#define MAX_V 10
const int MAX_N =10000000;


bool compare_by_b(pair<string,ll> a,pair<string,ll> b){
    if(a.second != b.second) return a.second<b.second;
    else return a.first<b.first;
}

bool my_compare(pair<ll,ll> a,pair<ll,ll> b){
    if(a.first != b.first) return a.first<b.first;
    if(a.second != b.second) return a.second>b.second;
    else return true;
}

ll modpow(ll a,ll n,ll mod1) {
    ll res=1;
    while(n>0){
        if(n&1) res=res*a%mod1;
        a = a*a%mod1;
        n >>= 1;
    }
    return res;
}

ll factorial(ll n){
    ll x=1;
    rrep(i,n) x*=i;
    return x;
}

ll gcd(ll a,ll b) { return b ? gcd(b, a%b) : a; }

ll func(ll a,ll b,ll& ans_x,ll& ans_y){
    if(b == 0){
        ans_x = 1;
        ans_y = 0;
        return a;
    }else{
        ll ret = func(b,(a%b),ans_y,ans_x);
        ans_y -= (a/b)*ans_x;
        return ret;
    }
}

ll par[MAX_N],ranking[MAX_N];

void init(ll n){
    rep(i,n){
        par[i]=i;
        ranking[i]=0;
    }
}

ll find(ll x){
    if(par[x]==x) return x;
    else return par[x]=find(par[x]);
}

void unite(ll x,ll y){
    x=find(x);
    y=find(y);
    if(x==y) return;
    
    if(ranking[x]<ranking[y]) par[x]=y;
    else{
        par[y]=x;
        if(ranking[x]==ranking[y]) ranking[x]++;
    }
}

bool same(ll x,ll y){
    return find(x)==find(y);
}



int main(){
    cin.tie(0);
    ios::sync_with_stdio(false);
    
    ll n,m;
    cin>>n>>m;
    map<ll,ll> mp;
    for(ll i=1;i*i<=m;i++){
        if(m%i==0){
            if(i==m/i) mp[i]+=m/i;
            else {
                mp[m/i]+=i;
                mp[i]+=m/i;
            }
        }
    }
    ll maxi=1;
    for(auto p:mp){
        if(p.second>=n || p.first<=m/n) maxi=max(p.first,maxi);
    }
    cout<<maxi<<endl;
    return 0;
}
