Numbers k such that sigma(tau(k)) equals the sum of distinct primes dividing k.

Terms

a(0) =3a(1) =10a(2) =104a(3) =105a(4) =175a(5) =245a(6) =276a(7) =343a(8) =414a(9) =484a(10) =532a(11) =798a(12) =1190a(13) =1430a(14) =1776a(15) =1862a(16) =3105a(17) =3174a(18) =3712a(19) =4394a(20) =5049a(21) =5054a(22) =5104a(23) =5994a(24) =6256a(25) =6360a(26) =6975a(27) =8125a(28) =8480a(29) =8625