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 <bits/stdc++.h>
using namespace std;

long long p, q;
long long int gcd(long long int x, long long int y){
	if(x % y == 0) return y;
	return gcd(y, x % y);
}

int main(){
//	cin.tie(0);
//	ios::sync_with_stdio(false);
	cin >> p >> q;
	long long g = gcd(p, q);
	p /= g;
	q /= g;
	cout << q << "\n";
}

C++: #include<bits/stdc++.h>
using namespace std;
int main(){
    long long p,q;
    cin >> p >> q;
    int va=q;
    int ans=0;
    for(long long i=2;i*i<=va;i++){
    	if(ans!=0)
    		break;
    	if(q%i==0){
    		ans=-1;
    		while(q%i==0){
    			q/=i;
    			//cout << q << endl;
    		}
    		if(q==1)
    			ans=i;
    	}
    }
    if(ans!=0&&ans!=-1){
    	//cout << "=============" << q <<  endl;
    	cout << ans << endl;
    }
    else{
    	q=va;
    for(long long i=2;i*i<=va;i++){
        if(p==1)break;
        while(p%i==0&&q%i==0){
            p/=i;
            q/=i;
        }
    }
    //cout << q << endl;
    /*for(long long i=2;i*i<=va;i++){
        if((double)pow(q,(float)1/i)-(long long int)pow(q,(float)1/i)==0){
            q/=(long long int)pow(q,(float)1/i);
        }
    }*/
    cout << q << endl;
    }
    return 0;
}

C++:  #include <iostream>
#include <cmath>

using std::cin;
using std::cout;
using std::endl;

int gcd(int n, int m) {
	if ( n%m == 0 ) {
		return m;
	}
	else {
		return gcd(m,n%m);
	}
}

int main(void) {
	int p,q;
	cin >> p >> q;
	int n = q;
	int m = p;
	int l = gcd(n,m);
	while ( l != 1 ) {
		n = n/l;
		m = m/l;
		l = gcd(n,m);
	}
	while ( (int)sqrt(n) == sqrt(n) ) {
		n = sqrt(n);
	}
	for (int i = 2; i*i < n+1; i++) {
		if ( n%(i*i) == 0 ) {
			n = n/i;
			i--;
		}
	}
	cout << n << endl;
	return 0;
}

C++: #include <bits/stdc++.h>
using namespace std;
int p, q, r = 1;
int main() {
	scanf("%d%d", &p, &q);
	q = q / __gcd(p, q);
	for (int i = 2; i * i <= q; i++) {
		if (q % i == 0) {
			r *= i;
			while (q % i == 0) q /= i;
		}
	}
	printf("%d\n", r * q);
	return 0;
}

C++: #include<bits/stdc++.h>
using namespace std;
int main(){
	long long p,q;
	cin >> p >> q;
	long long P=p,Q=q;
	while(p%q!=0){
		p=p%q;
		swap(p,q);
	}
	long long va=Q;
	//cout << q << endl;
	P/=q;
	Q/=q;
	for(long long i=2;i*i<=va;i++){
		va=Q;
		int count=0;
		while(Q%i==0&&Q/i!=1){
			count++;
			Q/=i;
		}
		if(Q==i)
			break;
		if(count==2){
			va/=i;
		}
		Q=va;
	}
	cout << Q << endl;
	return 0;
}

C++: #include <bits/stdc++.h>
using namespace std;

int GCD(int a, int b) {
	return b ? GCD(b, a%b) : a;
}

int main()
{
	int p, q, n, res = 1;
	cin >> p >> q;
	n = q / GCD(p, q);
	for (int i = 2; i < sqrt(n) + 2; i++) {
		if (n % i == 0) {
			res *= i;
			while (n % i == 0) {
				n /= i;
			}
		}
	}
	res *= n;
	if (res == 1) res = 2;
	cout << res << endl;
	return 0;
}

C++: #include<iostream>
#include<set>
#include<string>
#include<algorithm>
#include<vector>

using namespace std;


unsigned int p,q;
vector<int> yakusuu;


int main(){
  cin>>p>>q;

  for(int i=1;i<=p/2;i++){
    if(p%i==0){
      yakusuu.push_back(i);
    }
  }

  for(int j=0;j<yakusuu.size();j++){
    if(q%yakusuu[j]==0) q=q/yakusuu[j];
  }

  cout<<q<<endl;
 
  
  return 0;
}