Let n=p1a1p2a2…pkakn = p_1^{a_1} p_2^{a_2} \dots p_k^{a_k}n=p1a1p2a2…pkak. If n=360n = 360n=360, what is the sum of the exponents ∑ai\sum a_i∑ai?
333
444
555
666