If n = 4p, where p is a prime number greater than 2, how many different positive even divisors does n have, including n ?
题目解答
历史版本-3 由JoeHe2010更新于2013-06-09 19:17:11
Because p>2 and p is prime number, so p must be the odd number.
Prime number coulld not be divided.
so n=2*2*p, so even dividors is 2,4,2p,4p
2 and 2p: n=2*2p
4: n=4*p
4p: n=1*4p
