#include<iostream>
#include<algorithm>
#include<cstdio>
#include<cstdlib>
#include<vector>
#include<string>
#include<sstream>
#include<cmath>
#include<numeric>
#include<map>
#include<stack>
#include<queue>
#include<list>
using namespace std;
int inf = 1000000000;

int main(void) {

  long long int n;
  cin >> n;
  long long int cnt = 0;
  for(long long int i=1; i<=sqrt(n); i++){
    if( n % i == 0 ) cnt++;
  }
  cout << cnt << endl;

  return 0;
}

// EOF