#include<iostream>
using namespace std;

int main()
{
	int n,i,count;
	cin>>n;
	for(i=2,count=0;n/i-(i-1)/2>0;i++)
	{
		if(i%2==0)
		{
			if((n/i+n/i+1)*i/2==n)
				count++;
		}
		else
		{
			if(n%i==0)
				count++;
		}
	}
	cout<<count+1<<endl;
	return 0;
}