import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Scanner;

class Main {
	public static void main(String[] args) {
		new Main().run();
	}
	
	final long MOD=(long)1e9+7;
	
	
	ArrayList<Long> gen_divs(long n) {
		ArrayList<Long> divs=new ArrayList<>();
		if (n%2==0) {
			for (long div=2;div*div<=n;++div) {
				if (n%div!=0) continue;
				divs.add(div);
				divs.add(n/div);
			}
		} else {
			for (long div=3;div*div<=n;div+=2) {
				if (n%div!=0) continue;
				divs.add(div);
				divs.add(n/div);
			}
		}
		if (divs.size()>2 && divs.get(divs.size()-1)==divs.get(divs.size()-2)) {
			divs.remove(divs.size()-1);
		}
		return divs;
	}
	
	void run() {
		Scanner sc = new Scanner(System.in);
		PrintWriter pw=new PrintWriter(System.out);
		int S=sc.nextInt();
		while (S-->0) {
			long ans=0;
			long x=Long.parseLong(sc.next());
			long y=Long.parseLong(sc.next());
			if (x<y) {
				x^=y;y^=x;x^=y;
			}
			if (x==y) ans=x-1;//a=1の場合
			ArrayList<Long> divs=gen_divs(x+y);
			for (long d:divs) {
				if (d==2) continue;
				long a=d-1;
				long bc=(x+y)/d;
				long b=(x-bc)/(a-1);
				long c=bc-b;
				if (x!=a*b+c || y!=a*c+b || a<=0 || b<=0 || c<=0) continue;
				ans+=1;
			}
			pw.println(ans);
		}
		pw.flush();
	}
	
	void tr(Object...o) {System.out.println(Arrays.deepToString(o));}
}