GCD of the amicable pairs: a(n) = GCD(A002025(n), A002046(n)). 4, 2, 4, 4, 8, 8, 105, 16, 92, 16, 135, 819, 10, 45, 585, 16, 8, 10, 16, 16, 8, 44, 4, 4, 14
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