Numbers m such that k*phi(n) = Sum_{j|n} sigma(j), where k >= 1 is an integer.

Terms

a(0) =1a(1) =2a(2) =6a(3) =9a(4) =10a(5) =14a(6) =18a(7) =26a(8) =42a(9) =66a(10) =90a(11) =126a(12) =150a(13) =186a(14) =234a(15) =266a(16) =342a(17) =490a(18) =666a(19) =1426a(20) =1634a(21) =2394a(22) =4410a(23) =12834a(24) =14706a(25) =16758a(26) =18846a(27) =209754a(28) =308602a(29) =350154