//#define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
#define rep(i, n) for(int i=0; i<n; ++i)
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
using namespace std;
using ll = int64_t;
using ld = long double;
using P = pair<int, int>;
using vs = vector<string>;
using vi = vector<int>;
using vvi = vector<vi>;
template<class T> using PQ = priority_queue<T>;
template<class T> using PQG = priority_queue<T, vector<T>, greater<T> >;
const int INF = 0xccccccc;
const ll LINF = 0xcccccccccccccccLL;
template<typename T1, typename T2>
inline bool chmax(T1 &a, T2 b) {return a < b && (a = b, true);}
template<typename T1, typename T2>
inline bool chmin(T1 &a, T2 b) {return a > b && (a = b, true);}
template<typename T1, typename T2>
istream &operator>>(istream &is, pair<T1, T2> &p) { return is >> p.first >> p.second;}
template<typename T1, typename T2>
ostream &operator<<(ostream &os, const pair<T1, T2> &p) { return os << p.first << ' ' << p.second;}

struct Sieve {
  int n;
  vector<int> f, primes;
  Sieve(int n=1):n(n), f(n+1) {
    f[0] = f[1] = -1;
    for(int i=2; i<=n; ++i) {
      if(!f[i]) {
        primes.emplace_back(i);
        f[i] = i;
      }
      for(int p:primes) {
        int u = p*i;
        if(u > n or p > f[i]) break;
        f[u] = p;
      }
    }
  }
  //素数判定
  bool isPrime(int x) {return f[x] == x;}
  //素数判定(1つ用)(宣言はsqrt(x)のサイズで)
  bool isPrime1(int64_t x) {
    bool m = true;
    for(int z:primes) {
      if(!(x%z)) {
        m = false;
        break;
      }
    }
    return m;
  }
  //素数列挙
  vector<int > factorList(int x) {
    assert(x <= n);
    vector<int> res;
    while(x != 1) {
      res.emplace_back(f[x]);
      x /= f[x];
    }
    return res;
  }
  //素因数分解　pair(素数, 素因数の数)
  vector<pair<int, int> > factor(int x) {
    vector<int> fl = factorList(x);
    if(fl.size() == 0) return {};
    vector<pair<int, int> > res(1, pair<int, int>(fl[0], 0));
    for(int p : fl) {
      if(res.back().first == p) {
        ++res.back().second;
      } else {
        res.emplace_back(p, 1);
      }
    }
    return res;
  }
  //素数列挙(1つ用)(宣言はsqrt(x)のサイズで)
  vector<int64_t> factorList1(int64_t x) {
    vector<int64_t> vec;
    for(int z:primes) {
      while(!(x%z)) {
        vec.emplace_back(z);
        x /= z;
      }
    }
    if(x != 1) vec.emplace_back(x);
    return vec;
  }
  //素数列挙(1つ用)(宣言はsqrt(x)のサイズで)　pair(素数, 素因数の数)
  vector<pair<int64_t, int> > factor1(int64_t x) {
    vector<int64_t> vec = factorList1(x);
    vector<pair<int64_t, int> > vecc;
    for(vector<int64_t>::iterator itr = vec.begin(); itr != vec.end(); ++itr) {
      if(itr != vec.begin() && *itr == *(itr-1)) {
        (vecc.end()-1)->second++;
      } else {
        vecc.emplace_back(pair<int64_t, int>(*itr, 1));
      }
    }
    return vecc;
  }
  //約数列挙
  vector<int64_t> div1(int64_t x) {
    vector<int64_t> res(1, 1);
    vector<pair<int64_t, int> > fac = factor1(x);
    for(int i = 0; i < fac.size(); ++i) {
      int si = res.size();
      for(int j = 0; j < fac[i].second; ++j) {
        for(int k = 0; k < si; ++k) {
          res.emplace_back(res[k+j*si]*fac[i].first);
        }
      }
    }
    sort(res.begin(), res.end());
    return res;
  }
}pp(100000);

//head

int s;
int x, y;

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  cin >> s;
  while(s--) {
    cin >> x >> y;
    if(x == y) {
      int ans = 0;
      if(~x&1) ans--;
      ans += x-1;
      auto v = pp.factor1(x);
      int u = 1;
      for(auto k:v) {
        u *= k.second+1;
      }
      ans += u-1;
      cout << ans << '\n';
    }
    else {
      if(x > y) swap(x, y);
      auto v = pp.div1(y-x);
      int ans = 0;
      for(int u:v) {
        int b = y/(u+1);
        int c = y-(u+1)*b;
        if((u+1)*c+b == x) ans++;
      }
      cout << ans << '\n';
    }
  }
}