divisibility

First of all, not counting 1 as a prime number, we have the smallest 9 prime numbers as:
2, 3, 5, 7, 11, 13, 17, 19 and 23
Since the 9 prime numbers are relatively prime, i.e. having no common factors except 1, their L.C.M. will be:
2 × 3 × 5 × 7 × 11 × 13 × 17 × 19 × 23 = 223092870
which is also the LEAST NUMBER divisible by 9 DIFFERENT PRIME NUMBERS.
So ans = D

2007-09-26 11:04:14 補充：
Sorry, 看錯, ANS 應該係 C.