package main

import "fmt"

func main() {
	var N int
	fmt.Scan(&N)
	ans := 0
	for i := 1; i*i <= N; i++ {
		if N%i == 0 {
			if i*i != N {
				ans += 2
			} else {
				ans++
			}
		}
	}
	fmt.Println(ans)
}