#include <bits/stdc++.h>

int main()
{
	int64_t N, ans{1ll};
	scanf("%lld", &N);

	for (int64_t i{2ll}; i * i <= N; i++)
	{
		int64_t tmp{1};
		for (int64_t j{i}; N % i == 0; j *= i, N /= i)
			tmp += j;
		ans *= tmp;
	}
	if (N > 1) ans *= N + 1;

	printf("%lld\n", ans);

	return 0;
}