Sum of Reciprocal Squares of Divisors of a Number

Let $d$ be a positive integer divisor of $120$. Find the value of $$\sum_{d | 120} \frac{1}{d^2}$$The answer is in the form $\frac{\alpha}{\beta}$ where $\alpha$ and $\beta$ are coprime integers. Input the value of $\alpha+\beta$.