How to I find all the factors in this question?

Here is a Challenging problem. Consider the polynomial p[2:] = 25 + 3,24 + 2523 + 3on 162 48. Give the set of complex linear factors of 19. To help you out, you are told that 2 + 21' is a root, and that three of the roots are integers. The set of factors is: {2,-2, {-2+2*l},|{-1-l},-4} g"; E . Note: Your set should he of a form like {21 , z {1+2*I) }. Don't forget to use | {capital i) to represent the complex unit