Numbers n such that number of divisors of n divides S(n), the Kempner function A002034.

Terms

a(0) =1a(1) =2a(2) =8a(3) =9a(4) =18a(5) =45a(6) =128a(7) =243a(8) =486a(9) =625a(10) =1215a(11) =1250a(12) =1701a(13) =1875a(14) =2673a(15) =3750a(16) =4375a(17) =5000a(18) =6561a(19) =6875a(20) =8125a(21) =8750a(22) =10625a(23) =11875a(24) =13122a(25) =13125a(26) =13750a(27) =16250a(28) =16875a(29) =20625