#include<fstream>
using namespace std;
unsigned long long a,b,n,i,con,j;
unsigned long long cmmdc(unsigned long long a,unsigned long long b)
{
    unsigned long long r;
    while(b)
    {
        r=a%b;
        a=b;
        r=b;
    }
    return a;
}
int main()
{
    ifstream f("pinex.in");
    ofstream g("pinex.out");
    f>>n;
    for(i=1;i<=n;i++)
    {
        f>>a>>b;
        con=0;
        for(j=2;j<=a;j++)
        if(cmmdc(j,b)==1)
        con++;
        g<<con<<"\n";
    }
    return 0;
}