#include<iostream>
#include<math.h>
using namespace std;
unsigned long long sumofx(unsigned long long a);

int main()
{
	unsigned long long n;
	cin >> n;
	cout << sumofx(n % 2 ? n : n / 2) << endl;
	return 0;
}

unsigned long long sumofx(unsigned long long a)
{
	unsigned long long ans=1, b=1, c=0,i;
	while (a % 2 == 0) {
		c++;
		b = b + pow(2, c);
		a /= 2;
	}
	ans *= b;
	for (i = 3; i <= sqrt(a); i+=2) {
		b = 1;
		c = 0;
		while (a%i == 0) {
			c++;
			b = b + pow(i, c);
			a /= i;
		}
		ans *= b;
	}
	if (a != 1)ans *= a + 1;
	return ans;
}