Product of the anti-divisors of n.

Terms

a(0) =2a(1) =3a(2) =6a(3) =4a(4) =30a(5) =15a(6) =12a(7) =84a(8) =42a(9) =40a(10) =270a(11) =108a(12) =120a(13) =33a(14) =2310a(15) =1680a(16) =78a(17) =312a(18) =168a(19) =8100a(20) =4050a(21) =112a(22) =7140a(23) =204a(24) =11880a(25) =25080a(26) =114a(27) =960a(28) =7938a(29) =257985