For the positive integer n, let \langle n\rangle denote the sum of all the positive divisors of n with the exception of n itself. For example, <4>=1+2=3 and \langle 12\rangle= 1+2+3+4+6=16. What is \langle<<6>>> ?

**Answer Choices**

A. 6

B. 12

C. 24

D. 32

E. 36