Numbers k for which the number of common prime factors of sigma(k) and phi(k) is exactly six (ignoring multiplicity).

A081398

Numbers k for which the number of common prime factors of sigma(k) and phi(k) is exactly six (ignoring multiplicity).

Terms

    a(0) =2003639a(1) =2179316a(2) =2180057a(3) =2382974a(4) =2689561a(5) =2720567a(6) =2761873a(7) =2933675a(8) =3145572a(9) =3435381a(10) =3925463a(11) =4007278a(12) =4137111a(13) =4212692a(14) =4360114a(15) =4947971a(16) =5172881a(17) =5379122a(18) =5441134a(19) =5458673a(20) =5523746a(21) =5675816a(22) =5748831a(23) =5867350a(24) =5957435a(25) =6010917a(26) =6537948a(27) =6540171a(28) =6561511

External references