fn main() {
	let mut s = String::new();
	std::io::stdin().read_line(&mut s).ok();
	let n: u32 = s.trim().parse().unwrap();
	let mut a = 0;
	for i in 1..=n {
		match n % i {
			_ if i > n / i => break,
			0 if i == n / i => a += 1,
			0 => a += 2,
			_ => (),
		}
	}
	print!("{}", a)
}