def a(a):
    b=0
    for i in range(1,a):
        if a%i==0:
            b+=i
    return b
c=[]
for i in range(1,10000):
    if a(a(i))==i and i not in c and i!=a(i):
        print(i,a(i))
        c.append(i)
        c.append(a(i))

using namespace std;
int main(){
	int a=0,b=0;
	for(int i=2;i<=10000;i++){
		for(int j=1;j<i;j++){
			if(i%j==0){
				a+=j;
			}
		}
		
		for(int l=1;l<a;l++){
			if(a%l==0){
				b+=l;
			}
		}
		if(i==b&&i<a){
			cout<<i<<" "<<a<<endl;
		}
		a=0;
		b=0;
}
	return 0;
}