#include <bits/stdc++.h>
using namespace std;
typedef long long LL;
bool flag=false;
LL yueshu(LL x){
    LL ret=0;
    for(LL i=1;i<=x/i;++i){
        if(x%i==0) ret++;
        if(i*i==x) flag=true;
    }
    return ret;
}
int main(){
    LL n;
    cin>>n;
    int ans=yueshu(n)*2;
    if(flag==true){
        ans--;
    }
    cout<<ans<<endl;
    return 0;
}