Find the antiderivative of : $f(x)= \left(1+x^2\right)^{\frac{1}{m}}$

Question

I'm trying to find the antiderivative of the following function:

$$f(x)= \left(1+x^2\right)^{\frac{1}{m}}$$

where $m$ is an integer constant.

Please could you help me in finding how could I find the primitive of this function? Is there any particular technique concerning this types of functions?

Thanks in advance