Numbers k such that k and the sum of the divisors of k have the same prime signature.

Terms

a(0) =1a(1) =2a(2) =12a(3) =52a(4) =75a(5) =90a(6) =98a(7) =150a(8) =338a(9) =528a(10) =560a(11) =722a(12) =867a(13) =912a(14) =1452a(15) =1456a(16) =1525a(17) =1734a(18) =1922a(19) =2064a(20) =2340a(21) =2890a(22) =3050a(23) =3120a(24) =3216a(25) =3698a(26) =4144a(27) =4950a(28) =5043a(29) =6348