Numbers k such that k divides sigma(3*k).

Terms

a(0) =1a(1) =2a(2) =4a(3) =28a(4) =40a(5) =78a(6) =90a(7) =224a(8) =360a(9) =496a(10) =546a(11) =2016a(12) =2184a(13) =8128a(14) =10080a(15) =10920a(16) =11880a(17) =66528a(18) =145236a(19) =174592a(20) =714240a(21) =726180a(22) =1571328a(23) =4333056a(24) =6168960a(25) =7856640a(26) =12065760a(27) =15177600a(28) =33550336a(29) =47663616