Go: package main

import (
	"bufio"
	"fmt"
	"io"
	"math"
	"os"
	"strconv"
	"strings"
)

func main() {
	fmt.Println(resolve(parseProblem(os.Stdin)))
}

func parseProblem(r io.Reader) int {
	const (
		initialBufSize = 100000
		maxBufSize     = 1000000
	)
	buf := make([]byte, initialBufSize)

	sc := bufio.NewScanner(r)
	sc.Buffer(buf, maxBufSize)
	sc.Split(bufio.ScanWords) // bufio.ScanLines
	p, q := scanInt(sc), scanInt(sc)
	base := 1
	d := newRational(p, q).denomi
	for k := range primeFactories(d) {
		base *= k
	}
	return base
}

func isPrime(n int) bool {
	for i := 2; i*i <= n; i++ {
		if n%i == 0 {
			return false
		}
	}
	return true
}

func eratosthenes(n int) []bool {
	t := make([]bool, n)
	for i := 2; i < len(t); i++ {
		t[i] = true
	}
	for i := 2; i < len(t); i++ {
		if !t[i] {
			continue
		}
		for j := 2; j*i < len(t); j++ {
			t[j*i] = false
		}
	}
	return t
}

func primes(n int) chan int {
	ch := make(chan int)
	go func() {
		t := eratosthenes(n)
		for i := 2; i < len(t); i++ {
			if !t[i] {
				continue
			}
			ch <- i
		}
		close(ch)
	}()
	return ch
}

func primeFactories(n int) (terms map[int]int) {
	terms = map[int]int{}
	num := n
	for f := 2; f*f <= n; f++ {
		if num%f != 0 {
			continue
		}
		ex := 0
		for num%f == 0 {
			num /= f
			ex++
		}
		terms[f] = ex
	}
	if num > 1 {
		terms[num] = 1
	}
	return
}

type rational struct {
	frac, denomi int
	neg          int
}

func newRational(frac, denomi int) rational {
	r := rational{frac: frac, denomi: denomi}
	r.canonicalize()
	return r
}

func ratMul(x, y rational) rational {
	r := rational{
		frac:   x.frac * y.frac,
		denomi: x.denomi * y.denomi,
	}
	r.canonicalize()
	return r
}

func ratDiv(x, y rational) rational {
	return ratMul(x, ratInv(y))
}

func ratInv(x rational) rational {
	return rational{frac: x.denomi, denomi: x.frac}
}

func ratAdd(x, y rational) rational {
	r := rational{
		frac:   x.frac*y.denomi + y.frac*x.denomi,
		denomi: x.denomi * y.denomi,
	}
	r.canonicalize()
	return r
}

func ratSub(x, y rational) rational {
	return ratAdd(x, rational{frac: -y.frac, denomi: y.denomi})
}

func (r rational) Float64() float64 {
	b := float64(r.frac) / float64(r.denomi)
	if r.neg == 1 {
		return -b
	}
	return b
}

func (r rational) String() string {
	b := fmt.Sprintf("%d/%d", r.frac, r.denomi)
	if r.neg == 1 {
		return "-" + b
	}
	return b
}

func (r rational) equal(other rational) bool {
	r.canonicalize()
	other.canonicalize()

	return r.neg == other.neg &&
		r.frac == other.frac &&
		r.denomi == other.denomi
}

func (r *rational) canonicalize() {
	if r.frac < 0 {
		r.neg ^= 1
		r.frac = -r.frac
	}
	if r.denomi < 0 {
		r.neg ^= 1
		r.denomi = -r.denomi
	}
	d := gcd(r.frac, r.denomi)
	r.frac /= d
	r.denomi /= d
}

func nextRational(sc *bufio.Scanner) rational {
	s := nextString(sc)
	i := strings.Index(s, ".")
	if i != -1 {
		decimalDigit := len(s) - i - 1
		fr, _ := strconv.Atoi(strings.Replace(s, ".", "", 1))
		return newRational(fr, int(math.Pow10(decimalDigit)))
	}
	i = strings.Index(s, "/")
	if i != -1 {
		fr, _ := strconv.Atoi(s[0:i])
		de, _ := strconv.Atoi(s[i+1 : len(s)])
		return newRational(fr, de)
	}
	fr, _ := strconv.Atoi(s)
	return newRational(fr, 1)
}
func gcd(a, b int) int {
	for b > 0 {
		t := a / b
		a, b = b, a-t*b
	}
	return a
}
func nextInt(sc *bufio.Scanner) int {
	sc.Scan()
	a, _ := strconv.Atoi(sc.Text())
	return int(a)
}

func nextString(sc *bufio.Scanner) string {
	sc.Scan()
	return sc.Text()
}

func resolve(n int) int {
	return n
}

// snip-scan-funcs
func scanInt(sc *bufio.Scanner) int {
	sc.Scan()
	i, _ := strconv.Atoi(sc.Text())
	return int(i)
}
func scanString(sc *bufio.Scanner) string {
	sc.Scan()
	return sc.Text()
}

C++: #include <cstdio>
#include <iostream>
#include <string>
#include <sstream>
#include <stack>
#include <algorithm>
#include <cmath>
#include <queue>
#include <map>
#include <set>
#include <cstdlib>
#include <bitset>
#include <tuple>
#include <assert.h>
#include <deque>
#include <bitset>
#include <iomanip>
#include <limits>
#include <chrono>
#include <random>
#include <array>
#include <unordered_map>
#include <functional>
#include <complex>

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; }

const long long MAX = 5100000;
const long long INF = 1LL << 60;
const long long mod = 1000000007LL;
//const long long mod = 998244353LL;

using namespace std;
typedef unsigned long long ull;
typedef long long ll;


ll gcd(ll x, ll y)
{
	ll r;
	if (x < y) {
		swap(x, y);
	}
	while (y > 0) {
		r = x % y;
		x = y;
		y = r;
	}
	return x;
}

map<ll, ll> prime_factor(ll a) {
	map<ll, ll> ret;
	for (ll i = 2; i * i <= a; i++) {
		while (a % i == 0 && a != 0) {
			ret[i]++;
			a /= i;
		}
	}
	if (a != 1) {
		ret[a]++;
	}
	return ret;
}
int main()
{
	/*
	cin.tie(nullptr);
	ios::sync_with_stdio(false);
	*/

	ll p, q; scanf("%lld %lld", &p, &q);
	ll g = gcd(p, q);
	p /= g;
	q /= g;
	map<ll, ll> mp1 = prime_factor(p);
	map<ll, ll> mp2 = prime_factor(q);
	vector<ll> v;
	//for (auto p : mp1) v.push_back(p.first);
	for (auto p: mp2) v.push_back(p.first);
	sort(v.begin(), v.end()); v.erase(unique(v.begin(), v.end()), v.end());
	ll res = 1;
	for (auto e : v) res *= e;
	cout << res << endl;
	return 0;
}

C++: #include <stdio.h>
#include <math.h>

int gcd(int a, int b) {
  int t;
  while(b) {
    t = a % b;
    a = b;
    b = t;
  }
  return a;
}

int main(void){
  int p, q, i, j, ans = 1, bef = 0;
  scanf("%d%d", &p, &q);
  q /= gcd(p, q);
  for(i = 2; i < sqrt(q);) {
    if(!(q % i)) {
      if(bef != i) ans *= i;
      q /= i;
    } else ++i;
  }
  if(bef != q) ans *= q;
  printf("%d\n", ans);
  return 0;
}

C++: #include <iostream>
using namespace std;

int gcd(int a, int b) {
	if (b == 0) return a;
	return gcd(b, a % b);
}

int main() {
	int p, q;
	cin >> p >> q;
	
	int g = gcd(p, q);
	p /= g;
	q /= g;
	
	int ans = 1;
	for (int i = 2; i * i <= q; i++) {
		if (q % i != 0) continue;
		while (q % i == 0) { q /= i; }
		ans *= i;
	}
	ans *= q;
	
	cout << ans << endl;
	return 0;
}

C++: #include <bits/stdc++.h>
using namespace std;
#define rep(i,n) repi(i,0,n)
#define repi(i,a,b) for(int i=(int)(a);i<(int)(b);i++)
typedef long long i64;

int gcd(int a, int b){
    if(a%b==0) return b;
    return gcd(b,a%b);

}
int main(){
    int p,q;
    cin >> p >> q;
    int gcdqp = gcd(q,p);
    if(p==gcdqp) cout << 1 << endl;
    cout << q/gcd(q,p) << endl;
    return 0;
}

C++: #include <iostream>
#include <cstdio>
using namespace std;
int main(void){
	long long p,q;
	scanf("%lld %lld",&p,&q);
	long long m=1;
	for(int i=1;i<=p;i++){
		if(p%i==0 && q%i==0){
			m=i;
		}
	}
	printf("%lld\n",q/m);
	return 0;
}

C++: #include <bits/stdc++.h>
#define rep(i, a, n) for(int i = a; i < n; i++)
#define repb(i, a, b) for(int i = a; i >= b; i--)
#define all(a) a.begin(), a.end()
#define o(a) cout << a << endl
#define int long long
#define first fi;
#define second se;
using namespace std;
typedef pair<int, int> P;

int gcd(int a, int b){
    if(a < b) swap(a, b);
    if(b == 0) return a;
    return gcd(b, a % b);
}

signed main(){
    int p, q;
    cin >> p >> q;
    cout << q / gcd(p, q) << endl;
}

C++: #include <iostream>
#include <cmath>
using namespace std;

int gcd(int a, int b)
{
  return b == 0 ? a : gcd(b,a%b);
}

int main()
{
  int p, q;
  cin >> p >> q;
  q /= gcd(p,q);
  for(int i = 2; i < 10000; i++){
    double x = log(q) / log(i);
    if(ceil(x) == floor(x)){
      cout << i << endl;
      return 0;
    }
  }
  cout << q << endl;
}