//Aideen's Code for P21 {aideen[at]gmail[dot]com}
#include <iostream>
using namespace std;

int n, k;

int main() {
  cin >> n;

  for (int i=1; i*i<=n; i++)
    if (n % i == 0)
      k += 1 + (i*i != n);

  cout << k << endl;
  return 0;
}