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#include <iostream>

using namespace std;

int main() {
	int n;

	cin >> n;

	int cnt = 0;

	// m stands for multiplier
	for (int m1 = 2; m1 <= n / 3; ++m1) {
		for (int m2 = 2; m2 <= (n-m1-1) / m1; ++m2) {
			if (n % (1 + m1 + m1 * m2) == 0) {
				++cnt;
			}
		}
	}

	cout << cnt<<endl;

	return 0;
}