选择题
2016 AMC 8 Problem 9: Prime Divisors of 2016
What is the sum of the distinct prime integer divisors of 2016?
2016 AMC 8 第 9 题：2016 年的素因数
2016 年不同质数整数约数之和是多少
A.
9
B.
12
C.
16
D.
49
E.
63