```go
package main

import (
	"bufio"
	"fmt"
	"os"
)

func main() {
	in := bufio.NewReader(os.Stdin)
	var n int
	fmt.Fscan(in, &n)

	ans := 0
	for l := 1; l < n; l++ {
		if (n-l)%l == 0 {
			ans++
		}
	}
	fmt.Println(ans)
}
```