Numbers m such that m divides sigma(2*m).

Terms

a(0) =1a(1) =3a(2) =12a(3) =14a(4) =60a(5) =248a(6) =336a(7) =2160a(8) =2340a(9) =4064a(10) =13104a(11) =15120a(12) =16380a(13) =261888a(14) =1089270a(15) =4455360a(16) =8714160a(17) =10213632a(18) =11784960a(19) =16775168a(20) =22766400a(21) =45981824a(22) =71495424a(23) =98532480a(24) =229909120a(25) =689727360a(26) =738152448a(27) =4291822080a(28) =4294934528a(29) =5100118016