#include<iostream>
#include<cmath>
using namespace std;
int main()
{
    int n;
	cin>>n;
	n*=2;
	double m=n;
	int x=sqrt(m);
	int sum=0;
	for(int i=1;i<=x;i++)if(n%i==0&&(n/i)%2!=i%2)sum++;
	cout<<sum<<endl;
}