package main

import . "fmt"

func main() {
	var n int
	Scan(&n)
	m := map[int]bool{}
	for i := 1; i * i <= n; i++ {
		if n%i == 0 {
			m[i] = true
			m[n/i] = true
		}
	}
	Println(len(m))
}

func solve(n int) int {
	// 隣り合う整数 X X+1
	// XがC個、X+1がD個 (C >= 1 && D >= 1)
	// LEN = C + D (LEN > D && LEN > C)
	// N = X*C+(X+1)*D = X*(C+D) + D = X*LEN + D
	// うーん、N-D=X*LEN
	m := map[int]bool{}
	for x := 1; x*x <= n; x++ {
		if n % x == 0 {
			m[n/x] = true
			m[x] = true
		} else {
			l := n/x
			for d := n%x; d < l; d += x {
				m[(n-d)/x] = true
			}
		}
	}
	// Println(m) // 約数の数？
	return len(m)
}