Numbers such that the sum of divisors divides the concatenation (in ascending order) of divisors.

Terms

a(0) =1a(1) =2a(2) =6a(3) =10a(4) =40a(5) =98a(6) =112a(7) =120a(8) =1904a(9) =2680a(10) =4040a(11) =4128a(12) =5136a(13) =9920a(14) =12224a(15) =17900a(16) =20880a(17) =27800a(18) =44160a(19) =55520a(20) =57121a(21) =62240a(22) =86866a(23) =158880a(24) =178120a(25) =1431808a(26) =1773920a(27) =1825280a(28) =1918640a(29) =3751328