import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int k = sc.nextInt();
        int ans = 1;
        for (int i = 2; i <= Math.sqrt(n); i++) {
            if (n % i == 0) {
                if (n / i < k) {
                    break;
                }
                ans = i;
                if (i >= k) {
                    ans = n / i;
                    break;
                }
            }
        }
        System.out.println(ans);
    }
}