fn main() {
	let mut s = String::new();
	std::io::stdin().read_line(&mut s).ok();
	let n: Vec<u64> = s.split_whitespace().flat_map(str::parse).collect();
	let d = n[0] - n[1];
	let mut a = 0;
	for i in 1.. {
		if i * i > d {
			break;
		}
		if d % i == 0 {
			if i > n[1] {
				a += 1;
			}
			if d / i != i && d / i > n[1] {
				a += 1;
			}
		}
	}
	println!("{a}")
}