Go: package main

import "fmt"

func GCM(a, b int) int {
	if a < b {
		a, b = b, a
	}
	if b == 0 {
		return a
	}
	return GCM(b, a % b)
}

func LCM(a, b int) int {
	return a*b/GCM(a, b)
}

func main() {

	for {
		var a, b int
		var G, L int
		fmt.Scanf("%d %d", &a, &b)
		if a == 0 {
			break
		}
		G = GCM(a, b)
		L = LCM(a, b)
		fmt.Printf("%d %d", G, L)
	}
}

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

int GCD(int x,int y) {
    if (x<y) {
        swap(x,y);
    }
    if (y==0) {
        return x;
    }
    return GCD(y,x%y);
}
int LCM(int x,int y) {
    return x*y/GCD(x,y);
}
int main() {
    int a, b;
    while (cin >> a >> b) {
        printf("%d %d\n",GCD(a,b),LCM(a,b));
    }
    return 0;
}

C++: #include <cstdio>
typedef long long ll;
int gcd(int a, int b)
{
    return b == 0? a : gcd(b, a%b);
}
int lcm(int a, int b)
{
    return a*(b/gcd(a,b));
}
int main()
{
    int a, b;
    while(~scanf("%d%d", &a, &b))
    {
        printf("%d %d\n", gcd(a, b), lcm(a, b));
    }
    return 0;
}

C++: #include <iostream>

int main() {
	long long int a, b, t, ab, gcd, lcm;

	while (std::cin >> a >> b) {
		ab = a * b;
		while (a % b > 0) {
			t = a % b;
			a = b;
			b = t;
		}
		gcd = b;
		lcm = ab / gcd;
		std::cout << gcd << " " << lcm << std::endl;
	}

	return 0;
}

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

typedef long long ll;

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

ll lcm(ll a, ll b) {
	return a * b / gcd(a, b);
}

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

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

int GCD(int x,int y)
{
  if(y==0)
    return x;
  return GCD(y,x%y);
}

int LCM(int x,int y)
{
  return x * y / GCD(x,y);
}



int main(void)
{
  int a,b;
  while(scanf("%d %d",&a,&b) != EOF)
    {
      if(a<b){
	int k = b;
	b = a;
	a = k;
      }
      printf("%d %d\n",GCD(a,b),LCM(a,b));
    }
}
#include<stdio.h>
#include<string.h>

int GCD(int x,int y)
{
  if(y==0)
    return x;
  return GCD(y,x%y);
}

int LCM(int x,int y)
{
  return x * y / GCD(x,y);
}



int main(void)
{
  int a,b;
  while(scanf("%d %d",&a,&b) != EOF)
    {
      if(a<b){
	int k = b;
	b = a;
	a = k;
      }
      printf("%d %d\n",GCD(a,b),LCM(a,b));
    }
}

C++: #include<iostream>


using namespace std;

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

int main(){
  
  long long a,b;
  cin>>a>>b;

  long long ans1 = gcd(a,b);
  cout<<ans1<<" "<<(a*b)/ans1<<endl;
  return 0;
}

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

int saidai(int a,int b){
	

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

int main(){
	int a,b,c,d;
	cin>>a;
	cin>>b;

	c=saidai(a,b);
	d=a*b/c;
	cout<<c<<" "<<d;
	return 0;
}

C++: #include<stdio.h>
#include<stdlib.h>
int main()
{
    int a,b,s,d, l, k;
    while(scanf("%d%d",&a,&b)!=EOF){
    s=a;d=b;l=a;k=b;
    if(a>b){ while(b>0){if(a%b==0&&d%b==0) break; else b=b-1;} printf("%d ",b);}
    else { while(a>0){if(b%a==0&&s%a==0) break; else a=a-1;} printf("%d ",a);
}
    s=l;d=k;a=l;b=k;
    if(a>b){ while(b>0){if(a%b==0&&a%s==0) break; else a=a+1;} printf("%d\n",a);}
    else { while(a>0){if(b%a==0&&b%d==0) break; else b=b+1;} printf("%d\n",b);}
    }
    return 0;
}

C++: #include<iostream>
using namespace std;
int gcd(int x,int y);
int main(){
  int x,y,a,b;
  while(cin >>x>>y){
    a = gcd(x,y);
    b = x/a*y;
    cout <<a<<" "<<b<<endl;
  }
  return 0;
}
int gcd(int x,int y){
  if(!x){return y;}
  return gcd(y%x,x);
}

C++: #include<iostream>
#include<cstdio>
using namespace std;
int gcd(int a,int b)
{
	if(a<b)
		{
			int temp;
			temp=b;
			b=a;
			a=temp;
		}
	if(a%b==0)
		return b;
	return gcd(b,a%b);
}
int lcm(int a,int b)
{
	int gcd1;
	gcd1=gcd(a,b);
	return (a/gcd1)*b;
}
int main()
{
	int a,b;
	while(scanf("%d %d",&a,&b)!=EOF)
		{
			cout<<gcd(a,b)<<" "<<lcm(a,b)<<"\n";	
		}
	return 0;
}

C++: #include <iostream>

using namespace std;

int calcGCD(int a, int b);

int main(void)
{
    int a,b;
    int GCD;
    int LCM;
    
    while (cin >> a >> b) {
        GCD = calcGCD(a, b);
        if (GCD == -1) {
            return -1;
        }
        
        LCM = a / GCD * b;
        cout << GCD << " " << LCM << endl;
    }
    
    return 0;
}

int calcGCD(int a, int b)
{
    while (a > 0 && b > 0) {
        if (a > b) {
            a %= b;
        } else {
            b %= a;
        }
    }
    
    if (a == 0) {
        return b;
    } else if (b == 0){
        return a;
    } else {
        return -1;
    }
}

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



int main() {

//変数の宣言

	long int a,b,temp;
	long int c[2];
	
	while(cin>>a>>b){
	
		c[0] = a;
		c[1] = b;
		
		if (c[0] < c[1]){
			temp = c[0];
			c[0] = c[1];
			c[1] = temp;
		}
		
		while(1){
			c[0] = c[0] % c[1];
			if (c[0]==0) break;
			temp = c[0];
			c[0] = c[1];
			c[1] = temp;
		}
		c[0] = a/c[1];
		c[0] = c[0]*b;
		
		cout << c[1] << " " << c[0] << endl;
	
	}
	return 0;
}

C++: #include <iostream>
using namespace std;
typedef long long ll;
ll gcd(ll m, ll n){
	while(m!=n)m>n?m-=n:n-=m;
	return m;
}
int main(){
	ll a,b;
	while(cin>>a>>b)cout<<gcd(a,b)<<' '<<a/gcd(a,b)*b<<endl;
}

C++: #include<iostream>

int gcd(int a, int b){
    while(int remainder = (a % b) != 0) {
        a = b;
        b = remainder;
    }
    return b;
}

int lcm(int a, int b){
    return ((a / gcd(a, b)) * b);
}

int main(){
    int a,b;
    while(std::cin >> a >> b){
        if(a == -1 or b == -1)  break;
        std::cout << gcd(a, b) << " " << lcm(a, b)<< std::endl;
    }
    return 0;
}

C++: #include <iostream>
using namespace std;
int main()
{int a, b, c = 0;while (cin >> a, cin >> b){for (int i = 1; i <= a, i <= b; i++){if (a % i == 0 && b % i == 0){c = i;}}cout << c << " " << a*b / c << endl;}return 0;}

C++: #include<iostream>
#include<algorithm>
#include<cstdio>
using namespace std;
int main(){
	long long a,b,s,m,ta,tb,tmp;
	while(cin>>a>>b){
	ta=a,tb=b;
	s=1,m=1;
	if(a<b)swap(a,b);
	else 
	while(true){
		tmp=a;
		a=b;
		b=tmp%a;
		if(a%b==0){
			m=b;
			break;
		}
		if(a<b){
		//cout<<a<<" "<<b<<endl;
		m=1;
		break;
		}
		if(m==0)m=1;
		s=(ta*tb)/m;
		cout<<m<<" "<<s<<endl;
	}
	}
}

C++: #include<bits/stdc++.h>
using namespace std;
 
int gcd(int a,int b){
    if(b==0)return a;
    return gcd(b,a%b);
    }
signed main(){
 int a,b;
 while(cin>>a>>b){
     int c=gcd(a,b);
     printf("%d %d\n",c,a*b/c);
     }
}

C++: #include<bits/stdc++.h>
#define rep(i,n) for(ll i=0;i<n;++i)
#define rrep(i,n) for(int i=n-1;i>=0;--i)
#define yesno(flg) if(flg){cout<<"YES"<<endl;}else{cout<<"NO"<<endl;}
#define MAX_N 1002
#define i197 1000000007
#define Vi vector<int>
#define Vl vector<long long>
#define pb(a) push_back(a)

using namespace std;

typedef long long ll;
typedef pair<ll,ll> P1;
typedef pair<int,int> Pi;
typedef pair<double,Pi> Pdi;
typedef pair<ll,int>Pli;
typedef pair<P1,ll> P2;
const ll INF=100000000001;
int dy[]={0, 0, 1, -1};
int dx[]={1, -1, 0, 0};
struct Road{double cost;int a,b;};
struct edge{int to,cost;};
struct pos{
	int x,y,cost;
};
ll gcd(ll a2,ll b2){
	ll t;
	while(b2!=0){
		t=a2%b2;
		a2=b2;
		b2=t;
	}
	return a2;
}

ll lcm(ll a1,ll b1){
	if(a1*b1==0){return 0;}
	return (a1*b1/gcd(a1,b1));
}
int main() {

	rep(i,200){
		ll a,b;
		cin>>a>>b;
		if(cin.eof())break;
		cout<<gcd(a,b)<<" "<<lcm(a,b)<<endl;
	}

	return 0;
}

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

int main()
{
	long int a,b,i,k;

	while(cin>>a>>b){
		long int x=1, y=0;	//x最大公約数 y最小公倍数
		long int large ,small;

		//最小公倍数を求める処理
		if(a<b){small=a; large=b;}
		else{small=b; large=a;}
		for(i=large ;y==0 ;i+=large){
			if(i%small==0) y=i;
		}
		
		//最大公約数を求める処理
		long int ans[100];
		i=2; k=0;
		while(a>i && b>i){
			if(a%i==0 && b%i==0){
				ans[k]=i;
				a/=i; b/=i;
				k++;
			}else{
				i++;
			}
		}
		for(i=0 ;i<k ;i++) x*=ans[i];

		cout<<x<<" "<<y<<endl;
	}
}