How to compute $\int_{\{|y|=R\}} \frac{1}{|x-y|^n} \sigma (dy)$?

Question

Let $R>0$, and $x \in \mathbb{R}^n$. Then, how can I compute $\int_{\{|y|=R\}}\frac{1}{|x-y|^n} \sigma (dy)$ ? Here, $\sigma$ is a surface Lebesgue measure on $\{|y|=R\}$

I guess that I use polar coordinate. I know the case $x=0$, but I cannot compute in the case.