For an irreducible polynomial $f \in \mathbb{Z}[x]$ with $f(n) \ge 1$ for sufficiently large $n$, does there exists a constant $c = c(f) > 0$ such that $\sum_{n \le x} \tau(f(n)) \approx c \cdot x \log x$?

When $f$ is an irreducible quadratic polynomial, the question is answered first by Hooley [Ho63]. More compact expression of the constant in terms of Hurwitz class numbers (when $a = 1$) is given by McKey in [Mc95], [Mc97], [Mc99].

TODO: formalize Hurwitz class numbers and the expression of the constant in terms of them.