self Maths Puzzle

Let N = 23×317×56×74 and M = 212×35×54×78. P is total number of even factors of N such that they are not factors of M. Q is the total number of even factors of M such that they are not factors of N. Then 2P -Q = ?

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self Other Question
What is the product of all factors of the number N = 64×102 which are divisible by 5? Find the greatest number by which if we divide 740, 838 and 985, then in each case the remainder is the same.