include <bits/stdc++.h> 
using namespace std;
int main(){
	long int n,ans=0;
    cin>>n;
    for(long int i=1;i<=n;i++){
        if((n-1)%i==0){
            ans++;
        }
    }
    cout<<ans;
	return 0;
}
//测试点都过了哇
//编译信息：编译成功 UnexpectedResponse: got an unexpected response when requesting `https://codeforces.com/enter`: login fail
//评测状态：Unknown Error    

救救我啊啊大佬们