If n = Product (p_j^k_j) then a(n) = Product (p_j) + Product (k_j). 2, 3, 4, 4, 6, 7, 8, 5, 5, 11, 12, 8, 14, 15, 16, 6, 18, 8, 20, 12, 22, 23, 24, 9, 7, 27, 6, 16
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