#include <iostream>
#include <iomanip>
#include <fstream>

using namespace std;

ifstream f("pinex.in");
ofstream g("pinex.out");

int a, b,m;

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

int main()
{
    f>>m;
    int i, numere;
    for(int j=1; j<=m; j++)
    {
        f>>a>>b;
        numere=0;
        for(i=1; i<=a; i++)
        {
            if(prim(i, b) == 1)
                numere++;
        }
        g<<numere<<endl;

    }



    return 0;
}