Go: package main

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

func gcd(num1, num2 int) int {
	if num2 == 0 {
		return num1
	}
	num3 := num1 % num2
	return gcd(num2, num3)
}

func lcm(num1, num2 int) int {
	if num1%num2 != 0 {
		num3 := gcd(num1, num2)
		for i := 1; ; i++ {
			check := num3 * i
			if check%num1 == 0 && check%num2 == 0 {
				return check
			}
		}
	} else {
		return num1
	}
}

func main() {
	scanner := bufio.NewScanner(os.Stdin)
	for scanner.Scan() {
		row := strings.Fields(scanner.Text())
		nums := []int{}

		for _, v := range row {
			num, _ := strconv.Atoi(v)
			nums = append(nums, num)
		}
		fmt.Println(gcd(nums[0], nums[1]), lcm(nums[0], nums[1]))
	}
}

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

int func1(int a,int b){
    while(a != b){
        if(a>b)a-=b;
        else b-=a;
    }
    return a;
}

int func2(const int a,const int b){
    int a2=a,b2=b;
    while(a2 != b2){
        if(a2>b2)b2+=b;
        else a2+=a;
    }
    return a2;
}

int main(){
    int a,b;
    while(cin >> a >> b){
        cout << func1(a,b) << " " << func2(a,b);
    }
    return 0;
}

C++: #include <stdio.h>
typedef long long lint;
int a,b;
int gcd(int a,int b) {
    if(b==0) return a;
    return gcd(b,a%b);
}
int main() {
#ifdef debug
    freopen("in.txt","r",stdin);
#endif
    int g;
    while(scanf("%d %d",&a,&b)!=EOF) {
        g=gcd(a,b);
        printf("%d %lld\n",g,(lint)a*b/g);
    }
}

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


int main(){
	int a, b, tmp, x, y, z;
	while (true){
		cin >> a >> b;
		if (cin.eof()){
			break;
		}
		if (a < b){
			 tmp = a;
			 x = b;
		}
		else {
			x = a;
			tmp = b;
		}
		while (tmp != 0) {
			y = tmp;
			tmp = x % y;
			x = y;
		}
		z = a / y * b;
		cout << to_string(y) << " " << to_string(z) << endl;
	}
	return 0;
}

C++: #include<iostream>
using namespace std;
int gcd(int p,int q){
  int s;
  while(q){
    p%=q;
    s=p;
    p=q;
    q=s;
  }
  return p;
}
int main(){
  int g,p,q;
  while(cin>>p>>q){
    g=gcd(p,q);
    cout<<g<<" "<<p/g*q<<endl;
  }
  return 0;
}

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

using namespace std;

int find_GCD(int a, int b){
  int max = 0;
  for(int i=1;i<min(a, b);i++){
    if(a%i==0 && b%i==0){
      max = i;
    }
  }
  return max;
}

int find_LCM(int a, int b){
  int LCM;
  for(int i = max(a, b)+1;;i++){
    if(i%a==0 && i%b==0){
      LCM = i;
      break;
    }
  }

  return LCM;
}

int main(){
  int a, b;
  while(cin >> a >> b){
    //    cout << a << " " << b <<endl;
    //    int GCD = find_GCD(a, b);
    //    cout << GCD << endl;
    //    cout << find_GCD(a, b) << endl;
        cout << find_GCD(a, b) << " " << find_LCM(a, b) << endl;
  }

}

C++: #include <iostream>

template <typename T> T gcd(T a, T b) {
	T r;

	while (b) {
		r = a % b;
		a = b;
		b = r;
	}

	return a;
}

template <typename T> T lcm(T a, T b) {
	return a / gcd(a, b) * b;
}

int main() {
	using namespace std;
	for (;;) {
		int a, b;
		cin >> a >> b;
		if (cin.eof()) { break; }

		int g = gcd(a, b);
		int l = lcm(a, b);
		cout << g << ' ' << l << endl;
	}
	return 0;
}

C++: #include <iostream>
 
//calc G.C.D(m >= n)
int calcGcd(int m, int n){
    return n == 0 ? m : calcGcd(n, m%n);
}
//calc L.C.M
inline int calcLcm(int m, int n, int gcd){
    return m / gcd * n;
}

int main(){
	
    int a, b;
    // input
    while(std::cin >> a >> b){
        int gcd, lcm;
         
        if(a > b) gcd = calcGcd(a, b);
        else gcd = calcGcd(b, a);
        lcm = calcLcm(a, b, gcd);
        // output
        std::cout << gcd << " " << lcm << std::endl;
    }
     
    return 0;
}

C++: #include <iostream>
#include <queue>
#include <stack>
#include <vector>
#include <stdio.h>
#include <algorithm>
#include <string.h>
#include <string>
using namespace std;
typedef long long ll;
#define rep(i,n) for(int i=0;i<int(n);++i)

ll a,b;

ll gcd(ll a,ll b){
	if((0==a)||(0==b)) return 0;
	
	while(a!=b){
		if(a>b) a -= b;
		else b -= a;
	}
	return a;
}

ll lcm(ll a,ll b){
	if((a==0)||(b==0)) return 0;
	
	return ((a/gcd(a,b)) * b);
}

int main(){
	while(cin>>a>>b){
		cout<<gcd(a,b)<<" "<<lcm(a,b)<<endl;
	}
	return 0;
}

C++: #include <iostream>
#include <vector>
#include <fstream>
#include <algorithm>
#include <iomanip>
#include <map>
#include <queue>
#include <stack>
#include <set>
#include <ctime>
#include <iterator>
#include <sstream>
#include <cstdio>
#include <cstdlib>
#include <cmath>
using namespace std;
 
 
long long pgcd(long long a,long long b)
{
    return a==0?b:pgcd(b%a,a);
}
 
long long ppcm(long long a,long long b)
{
    return a*b/pgcd(a,b);
}
 
int main()
{
    long long a,b;
    while(cin>>a>>b)
    {
        cout<<pgcd(a,b)<<" "<<ppcm(a,b)<<endl;
    }
}

C++: #include<iostream>
#include<algorithm>
#include<vector>
int main(){
	int a, b, product;

  	while (std::cin >> a >> b) {
    	product = a * b;
		std::vector<int> v = {a, b};
    	while (v.at(0) != v.at(1)) { 
      		std::sort(v.begin(), v.end(), std::greater<int>());
      		v.at(0) = v.at(0) - v.at(1);
		}	
    	std::cout << v.at(0) << " " << product/v.at(0) << std::endl;	
  	}
	return 0;
}

C++: /*------------------------------------------------------------------------------------------------|
| %%%%%%%%%%%%%%%%%%%%%%%%%MD.ASANURJAMAL ANOWAR HOSSAIN ANU%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| %%%%%%%%%%%%%%%%%%%%%%%%%COMPUTER SCIENCE AND ENGINEERING%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| %%%%%%%%%%%%%%%%%%%%%%%%%ISLAMIC UNIVERSITY KUSHTIA%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| %%%%%%%%%%%%%%%%%%%%%%%%%BANGLADESH%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
|-------------------------------------------------------------------------------------------------*/
#include <algorithm>
#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <string>
#include <cmath>
#include <list>
#include <map>
#include <fstream>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <bitset>
#include <cctype>
#include <vector>
#include <complex>
#include <ctime>
#include <deque>
#include <memory>
#include <utility>

#define S(a) scanf("%d",&a)
#define SL(a) scanf("%ld",&a)
#define S2(a,b) scanf("%d%d",&a,&b)
#define SL2(a,b) scanf("%ld%ld",&a,&b)
#define S3(a,b,c) scanf("%d%d%d",&a,&b,&c)
#define SL3(a,b,c) scanf("%ld%ld%ld",&a,&b,&c)
#define SLL(a) scanf("%lld",&a)
#define SLL2(a,b) scanf("%lld%lld",&a,&b)
#define SLL3(a,b,c) scanf("%lld%lld%lld",&a,&b,&c)
#define SS(a) scanf("%s",a)
#define SC(a) scanf("%c",&a)
#define SD(a) scanf("%lf",&a)
#define P(a) printf("%d",a)
#define PL(a) printf("%ld",a)
#define PLL(a) printf("%lld",a)
#define PD(a) printf("%lf",a)
#define PC(a) printf("%c",a)
#define PS(a) printf("%s",a)
#define CS(kk) printf("Case %ld: ",kk++)
#define NL(kk) printf("\n")
#define PI 3.14159265358979323846264338327950
#define eps 1e-9
#define MAX(a,b) (a>b?a:b)
#define MIN(a,b) (a<b?a:b)

using namespace std;

long long gcd(long long  a,long long b)
{
while(b>0)
{
a=a%b;
a=a^b;
b=b^a;
a=a^b;
}
return a;
}

long long lcm(long a,long long b)
{
    long long x=(a*b)/gcd(a,b);
    return x;
}
int main()
{
    long long i,ii,l,p,s,n,ll;
    long long a,b,c;
    //cin>>n;
    while(cin>>a>>b)
    {
     l=gcd(a,b);
     ll=lcm(a,b);
     cout<<l<<" "<<ll<<endl;
    }
 return 0;
}

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

using namespace std;

int calc_gcj(int a, int b) {
	int A=0, B=0;
	if (a == max(a,b)) {
		A = a;
		B = b;
	} else {
		A = b;
		B = a;
	}
	if (A == B) return A;
	else return calc_gcj(B,A-B);
	return -1;
}

void solve(int a, int b) {
	int gcj = calc_gcj(a,b);
	int lcm = a/gcj*b;
	cout << gcj << " " << lcm << endl;
}

int main() {
	int a, b;
	while (cin >> a >> b) {
		solve(a,b);
	}
	return 0;
}