#include <iostream>
using namespace std;
#include<fstream>
#define mod 666013

int euclid (int a, int b)
{
     if (a<b)
        {a=a+b;
        b=a-b;}
    int d;
    for(int i=1;i*i<b;i++)
        {if (b%i==0&&a%i==0)
            d=i;
        if(a%(b/d)==0)
        return (b/d);}
    return d;
}
int main ()
{
    int n,a,b;
    ifstream f("euclid2.in");
    ofstream g("euclid2.out");
    f>>n;
    while(n)
    {
       f>>a>>b;
       g<<euclid(a,b)<<"\n";
       n--;
    }


    return 0;
}