2,400 has how many positive divisors?  Choose the most appropriate option:  A) 20  B) 24  C) 32  D) 36  E) 40
By factorization, we can write 2400 as 2400=2^5*3*5^2.   The number of factors is (5+1)(1+1)(2+1) = 36   The answer is 36.
<result>D</result>
2,400 has how many positive divisors?