Question 73
Francesco wants to write the polynomial $x^{16}+x$ as a product of several polynomials with integer coefficients, each of degree at least 1. What is the maximum number of factors he can obtain?
(A) 1
(B) 2
(C) 3
(D) 4
(E) 5 .
(A) 1
(B) 2
(C) 3
(D) 4
(E) 5 .