#include <stdio.h>
int v[4194000],d,i,k;
int main(){
    freopen("diviz.in","r",stdin);
    freopen("diviz.out","w",stdout);
    int a,b,s,m;
    scanf("%d",&m);
    for(k=1;k<=m;k++){
    scanf("%d%d",&a,&b);
    for(i=1;i<=a;i++)
        v[i]=0;
    s=a;
    for(i=2;i*i<=b;i++){
        if(b%i==0){
            while(b%i==0){
                b=b/i;
            }
        d=1;
        while(i*d<=a){
            v[i*d]=1;
            d++;}
        }
    }
    d=1;
    if(b!=1)
        while(b*d<=a){
            v[b*d]=1;
            d++;}
    for(i=1;i<=a;i++)
        if(v[i]==1)
            s--;
    printf("%d\n",s);
    }
    return 0;
}