#include <bits/stdc++.h>
using namespace std;
int main(){
  int S;
  cin >> S;
  for (int i = 0; i < S; i++){
    long long X, Y;
    cin >> X >> Y;
    if (X > Y){
      swap(X, Y);
    }
    int ans = 0;
    if (X == Y){
      ans += X - 1;
    }
    int D = Y - X;
    vector<long long> f;
    for (int j = 1; j * j <= D; j++){
      if (D % j == 0){
        f.push_back(j + 1);
        if (j * j < D){
          f.push_back(D / j + 1);
        }
      }
    }
    for (long long A : f){
      if ((A * Y - X) % (A * A - 1) == 0 && A * Y - X > 0){
        if ((A * X - Y) % (A * A - 1) == 0 && A * X - Y > 0){
          ans++;
        }
      }
    }
    cout << ans << endl;
  }
}