#include <iostream>
#include <math.h>
using namespace std;

int main() {
  long  n, half, cnt;
  cin >> n;
  half = (long)sqrt(n);  
  cnt = 0;
  for (int i = 1; i <= half; i++) {
    if (n % i == 0) {
      if (n / i == i) {
        cnt++;
      } else {
        cnt = cnt + 2;
      }
    }
  }
  cout << cnt << endl;
}