Numbers whose sum of divisors is the fourth power of one of their divisors.

Terms

a(0) =1a(1) =510a(2) =642a(3) =3394440a(4) =3629640a(5) =3653640a(6) =3663240a(7) =3673080a(8) =3701160a(9) =3736920a(10) =3901080a(11) =3958680a(12) =4077960a(13) =4137240a(14) =4240920a(15) =4251480a(16) =4256520a(17) =4273320a(18) =4274520a(19) =4319880a(20) =7300854a(21) =12798240a(22) =13362720a(23) =14405664a(24) =15170820a(25) =16173024a(26) =16342368a(27) =16354884a(28) =16361184a(29) =16957668