Go: package main

import "fmt"

func main() {
	var gcdArr, lcmArr [50]int
	var count int
	for {
		var x, y int
		fmt.Scanf("%d %d", &x, &y)
		if count == 51 {
			break
		}
		if x < y {
			rep := x
			x, y = y, rep
		}
		gcd := x % y
		lcm := x * y
		for gcd != 0 {
			x, y, gcd = y, gcd, x%y
		}
		gcdArr[count] = y
		lcmArr[count] = lcm / y
		count++
	}
	for i := 0; i < count; i++ {
		fmt.Printf("%d %d\n", gcdArr[i], lcmArr[i])
	}
}

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

int main()
{
	long a,b;
	while(cin>>a>>b)
	{
		/*long numerator=min(a,b);
		long denominator=max(a,b);
		long remainder = a % b;
		while(remainder !=0)
		{
			 numerator   = denominator;
			denominator = remainder;
			remainder   = numerator % denominator;
		}
		long gcd = denominator;
		long long lcm = a * (b / gcd);
		cout<<gcd<<" "<<lcm<<endl;
		*/
		long long gcd=1;
		for(long long i=min(a,b);i>0;i--)
		{
			if(a%i ==0)
				if(b%i==0)
				{
					gcd=i;;
					break;
				}
		}
		cout<<gcd<<" "<<a * (b / gcd)<<endl;
	}
}

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

int main() {
	long long int a, b, t, aa, bb;

	while (1) {
		cin>>a;
		if (cin.eof()) break;
		cin>>b;

		aa = a;
		bb = b;

		while (1) {
			if (b==0) break;

			t = b;
			b = a % b;
			a = t;
		}
		cout<<a<<" "<<aa*bb/a<<endl;
	}
	return 0;
}

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


int main()
{
	long a[100],b[100];
	int i=0;
	while(cin >> a[i] >> b[i]){i++;}
	for(int j=0;j<i;j++){
		long c;
		long d=a[j],e=b[j];
		if (a[j]<b[j]){c=a[j];a[j]=b[j];b[j]=c;}
		while(a[j]%b[j]!=0){
			c=a[j];
			a[j]=b[j];
			b[j]=c%b[j];
		}
		cout << b[j] <<" " <<d/b[j]*e <<  endl;
	}
    return 0;
}

C++: #include<stdio.h>
#include<iostream>
#include<iomanip>

#define ll long long
#define REP(i, a) for(int i=0;i<(int)a;++i)
using namespace std;

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

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


void solver() {
    ll a, b;
    while (cin >> a >> b) {
        cout << __algo_gcd(a, b) << " " << lcm(a, b) << endl;
    }
}

int main() {
    solver();
    return 0;
}

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

long long a,b;

long long gcd(long long a,long long b){
  if(b == 0) 
    return a;
  else 
    return gcd(b, a % b);
}
long long lcm(long long a,long long b){
    return (a * b) / gcd(a, b);
}

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

C++: #include <iostream>

using namespace std;
typedef long long LL;

LL gcd(LL x, LL y){
  return (y == 0? x: gcd(y, x % y));
}

LL lcm(LL x, LL y){
  return x * y / gcd(x,y);
}

int main(){
  LL x, y;
  while(true){
	if(!(cin >> x >> y)) return 0;
	cout << gcd(x,y) << " " << lcm(x,y) << endl;
  }
  return 0;
}

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

int u(int a, int b);
int l(int a, int b, int gcd);

int main(){
  int a, b;
  int gcd, lcm;
  
  while(scanf("%d", &a)!=EOF){
    scanf("%d", &b);
    gcd = u(a, b);
    lcm = l(a, b, gcd);
    std::cout << gcd << " " << lcm << std::endl;
  }
  
  return 0;
}

int u(int a, int b){
  while(1){
    if(a==1) return b;
    else     return a;
    if(a>=b){
      a = a % b;
    }else{
      b = b % a;
    }
  }
  
}

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

C++: #include"iostream"
using namespace std;
int max(int a,int b)

{
	if(!b)
	{
		return a;
	}
	return max(b,a%b);
}
int main()
{
	int m,n,temp;
         while (scanf("%d%d", &m, &n) != EOF)
	{
		     
	    	
		 
			if(m>n)
			{
				int a=max(m,n) ;
			printf("%d %d\n",a,n/a*m);
			}
			else
			{
				temp=m;
				m=n;
				n=temp;
				int a=max(m,n);
			printf("%d %d\n",a,n/a*m);
				
			}
		 	
		}
	}

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

#define ULL_INT unsigned long long int

ULL_INT GCD(ULL_INT a, ULL_INT b) {
	if (a < b) swap(a, b);
	a = a % b; return (a == 0 ? b : GCD(a, b));
}

ULL_INT LCM(ULL_INT a, ULL_INT b) {
	return a * b / GCD(a, b);
}

int main() {
	ULL_INT a, b;
	while (cin >> a >> b) 
		cout << GCD(a, b) << " " << LCM(a, b) << endl;
	return 0;
}

C++: #include <stdio.h>

int main(){
    int a,b,m,l;
    while(scanf("%d %d",&a,&b)!=EOF){
        m = a%b;
        l = a*b;
        while(m){
            a = b;
            b = m;
            m = a%b;
        }
        printf("%d %d\n",b,l/m);
    }
}

C++: #include <cstdio>
#include <queue>
#include <string>
#include <set>
#include <map>
#include <vector>
#include <string>
#include <sstream>
#include <iostream>
#include <bitset>
#include <cmath>
#include <algorithm>
#include <functional>
#include <string.h>
using namespace std;
const int INF = 1 << 28;
typedef long long ll;
typedef pair<int, int> P;
#define rep(i,start,end) for(int i=(start);i<(end);++i)
#define pint(i) printf("%d\n",(i))
#define pint2(i,j) printf("%d %d",(i),(j))
#define pint3(i,j,k) printf("%d %d %d",(i),(j),(k))
#define gint(i) scanf("%d",&(i))
#define gint2(i,j) scanf("%d %d",&(i),&(j))
#define gint3(i,j,k) scanf("%d %d %d",&(i),&(j),&(k))
#define init(tar,val) memset((tar),(val),sizeof((tar)))
#define show(tar,len) for(int i=0;i<(len);++i) \
	cout<<tar[i]<<' ';\
	cout<<endl;


/*

class bignum{
public:
	bignum(int size = 4) :len(size){
	}
	~bignum(){
	}
	int size()const{
		return len;
	}
	//int get(int id)const{
	//	return num[id];
	//}
	friend ostream &operator<<(ostream &output, const bignum &b){
		bool stu = false;
		for (int i = int(b.len - 1); i >= 0; --i){
			if (stu)
				printf("%09d", b.num[i]);
			else if (b.num[i] > 0){
				printf("%d", b.num[i]);
				stu = true;
			}
		}
		if (stu == false)
			printf("0");
		return output;
	}
	const bignum& operator+=(const bignum&right){
		int add = 0;
		for (int i = 0; i < len; ++i){
			int tmp = 0;
			if (i < right.size()){
				tmp = right.num[i] + num[i] + add;
			}
			else{
				tmp = num[i] + add;
			}
			num[i] = tmp%gap;
			add = tmp / gap;
		}
		return *this;
	}
	const bignum& operator=(const bignum&right){
		for (int i = 0; i <len; ++i){
			num[i] = right.num[i];
		}
		return *this;
	}
	void set(int a){
		for (int i = 0; i <len; ++i){
			num[i] = a%gap;
			a /= gap;
		}
	}
private:
	int  num[4];
	int len;
	static const int gap = 1000000000;
};

//int gcd(int a,int b){
//	if(b==0)
//		return a;
//	return gcd(b,a%b);
//}
//
////a*x+b*y=gcd(a,b);
//int extgcd(int a,int b,int &x,int &y){
//	int d=a;
//	if(b!=0){
//		d=extgcd(b,a%b,y,x);
//		y-=(a/b)*x;
//	}
//	else{
//		x=1,y=0;
//	}
//	return d;
//}


//inline int id(int i){
//	return i & 1;
//}
//
//inline int last(int i){
//	return (i - 1) & 1;
//}
//
//void myshow(int i){
//	rep(j, 0, ){
//		cout << dp[id(i)][j] << ' ';
//	}
//	cout << endl;
//}

//int n_stu[MAX_N];
//void n_init(){
//	rep(i, 0, n)
//		n_stu[i] = i;
//}
//int n_getf(int id){
//	if (n_stu[id] != id){
//		n_stu[id] = n_getf(n_stu[id]);
//	}
//	return n_stu[id];
//}
//bool n_same(int i, int j){
//	if (n_getf(i) == n_getf(j))
//		return true;
//	return false;
//}
//void n_union(int i, int j){
//	int fi = n_getf(i), fj = n_getf(j);
//	if (fi != fj){
//		n_stu[fi] = fj;
//	}
//}


*/
#define my_debu



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

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

int main(){
#ifdef my_debug
	freopen("a.in", "r", stdin);
#endif
	ll a, b;
	while (scanf("%lld %lld",&a,&b)!=EOF){
		ll tmp = gcd(a, b);
		printf("%lld %lld\n", tmp, lcm(a, b, tmp));
	}
	return 0;
}

C++: #include <iostream>

using namespace std;

int main(){
    long long a, b, r, g, l;
    while(cin >> a >> b){
        l = a*b;
        if(a < b) swap(a,b);
        do{
            r = a % b;
            a = b;
            b = r;
        }while(r);
        g = a; l /= g;
        cout << g <<' '<<l <<endl;
    }
    return 0;
}