#include <fstream>
using namespace std;

ifstream cin ("nenepatrat.in");
ofstream cout("nenepatrat.out");

int main()
{
    int n,m,nrn=1,nrn2=1,d=2,p;
    cin>>n;
    while(d*d<=n)
    {
        if(n%d==0)
        {
            p=0;
            while(n%d==0)
            {
                p++;
                n/=d;
            }
            nrn*=(1+p);
            nrn2*=(1+2*p);
        }
        d++;
    }
    if(n!=1)
    {
        nrn*=2;
        nrn2*=3;
    }
    cout<<(nrn2+1)/2-nrn;
    return 0;
}