fn sieve(n: usize) -> Vec<usize> {
    let batch = (n as f64).sqrt() as usize + 1;
    let mut is_prime = vec![true; batch + 1];
    for i in (2..).take_while(|p| p * p <= batch) {
        if is_prime[i] {
            let mut j = i * i;
            while let Some(p) = is_prime.get_mut(j) {
                *p = false;
                j += i;
            }
        }
    }
    let mut prime = vec![];
    let mut small_prime = vec![];
    for (i, p) in is_prime.iter().enumerate().skip(2) {
        if *p && i <= n {
            prime.push(i);
            small_prime.push(i);
        }
    }
    let mut l = batch;
    while l <= n {
        let r = std::cmp::min(l + batch, n + 1);
        is_prime.clear();
        is_prime.resize(r - l, true);
        for &p in small_prime.iter() {
            let mut j = (l + p - 1) / p * p - l;
            while let Some(is_prime) = is_prime.get_mut(j) {
                *is_prime = false;
                j += p;
            }
        }
        for (i, p) in is_prime.iter().enumerate().filter(|p| *p.1) {
            if *p {
                prime.push(i + l);
            }
        }
        l += batch;
    }
    prime
}
//https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8 より
macro_rules! input {
    (source = $s:expr, $($r:tt)*) => {
        let mut iter = $s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
    ($($r:tt)*) => {
        let s = {
            use std::io::Read;
            let mut s = String::new();
            std::io::stdin().read_to_string(&mut s).unwrap();
            s
        };
        let mut iter = s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
}

macro_rules! input_inner {
    ($iter:expr) => {};
    ($iter:expr, ) => {};
    ($iter:expr, $var:ident : $t:tt $($r:tt)*) => {
        let $var = read_value!($iter, $t);
        input_inner!{$iter $($r)*}
    };
}

macro_rules! read_value {
    ($iter:expr, ( $($t:tt),* )) => {
        ( $(read_value!($iter, $t)),* )
    };
    ($iter:expr, [ $t:tt ; $len:expr ]) => {
        (0..$len).map(|_| read_value!($iter, $t)).collect::<Vec<_>>()
    };
    ($iter:expr, chars) => {
        read_value!($iter, String).chars().collect::<Vec<char>>()
    };
    ($iter:expr, bytes) => {
        read_value!($iter, String).bytes().collect::<Vec<u8>>()
    };
    ($iter:expr, usize1) => {
        read_value!($iter, usize) - 1
    };
    ($iter:expr, $t:ty) => {
        $iter.next().unwrap().parse::<$t>().expect("Parse error")
    };
}

//

use std::io::Write;

fn run() {
    let out = std::io::stdout();
    let mut out = std::io::BufWriter::new(out.lock());
    input! {
        s: usize,
        ask: [(usize, usize); s],
    }
    let prime = sieve((10usize.pow(9) as f64).sqrt().floor() as usize);
    let divisor = |mut n: usize| -> Vec<usize> {
        let mut d = vec![1];
        for &p in prime.iter() {
            if p * p > n {
                break;
            }
            let mut c = 0;
            while n % p == 0 {
                c += 1;
                n /= p;
            }
            let len = d.len();
            let mut mul = 1;
            for _ in 1..=c {
                mul *= p;
                for i in 0..len {
                    let v = d[i] * mul;
                    d.push(v);
                }
            }
        }
        if n > 1 {
            for i in 0..d.len() {
                let v = d[i] * n;
                d.push(v);
            }
        }
        d
    };
    for (x, y) in ask {
        let mut ans = 0;
        for d in divisor(x + y) {
            if d == 1 {
                continue;
            }
            let sum = (x + y) / d;
            if sum <= 1 {
                continue;
            }
            let a = d - 1;
            if a == 1 {
                if x == y {
                    ans += sum - 1;
                }
            } else if x > sum && y > sum {
                let b = (x - sum) / (a - 1);
                let c = (y - sum) / (a - 1);
                if a * b + c == x && a * c + b == y {
                    ans += 1;
                }
            }
        }
        writeln!(out, "{}", ans).ok();
    }
}

fn main() {
    run();
}