The number 12 has six factors: 1,2,3,4,6 and 12. Four of these are even (2,4,6 and 12) and two are odd (1 and 3).
(1) Find some numbers which have all their factors, except 1, even. Describe the sequence of numbers that has this property.
(2) Find some numbers which have exactly half their factors even. Again describe the sequence of numbers that has this property.
