#include <bits/stdc++.h>
#include<iostream>
#include<iomanip>
#include<string>
#include<algorithm>
#include<vector>
#include<set>
#include<list>
#include<queue>
#include<math.h>
#include<bitset>
using ll = long long;
using namespace std;


int main(){
    int n, k, ans = 1;
    cin >> n >> k;
    for (int i = 2; i*i <= n; i++) {
        if (!(n%i)) ans = max(ans, n/i); 
    }
    cout << ans << endl;
}