Numbers n such that sigma(x) = n has more solutions x than any smaller n.

Terms

a(0) =1a(1) =12a(2) =24a(3) =72a(4) =168a(5) =240a(6) =336a(7) =360a(8) =504a(9) =576a(10) =720a(11) =1440a(12) =2880a(13) =4320a(14) =5760a(15) =8640a(16) =10080a(17) =15120a(18) =17280a(19) =20160a(20) =30240a(21) =40320a(22) =60480a(23) =120960a(24) =181440a(25) =241920a(26) =362880a(27) =483840a(28) =604800a(29) =725760