Numbers k that divide tau(k)*sigma(k).

Terms

a(0) =1a(1) =2a(2) =6a(3) =12a(4) =18a(5) =24a(6) =28a(7) =40a(8) =84a(9) =120a(10) =224a(11) =234a(12) =240a(13) =252a(14) =360a(15) =468a(16) =496a(17) =672a(18) =864a(19) =936a(20) =1638a(21) =1920a(22) =2016a(23) =2480a(24) =3276a(25) =4320a(26) =4680a(27) =6048a(28) =6528a(29) =6552