#include<iostream>
#include<algorithm>
#include<vector>
#include<cmath>
using namespace std;
int main(void){
    unsigned long long N;
    int count = 0;
    cin >> N;
    for(unsigned long long i=sqrt(N);i>0;i--){
        for(unsigned long long j=1;j<i;j++){
            if(i*j==N)  count++;
        }
    }
    if(sqrt(N)*sqrt(N)==N)  count--;
    cout << count;
    return 0;
}