#include <fstream>

using namespace std;
ifstream cin ("ciur.in");
ofstream cout ("ciur.out");
int n,i,d,ciur[2000005];
int main()
{
    cin >>n;
    for (i=1; i*i<=2000000; i++)
    {
          for (d=i; d<=2000000; d=d+i)
            {
                ciur[d]++;
            }
    }
    cout <<ciur[n];
    return 0;
}