Composite numbers k for which phi(k) + sigma(k) is an integer multiple of the 4th power of the number of divisors of k.

A055468

Composite numbers k for which phi(k) + sigma(k) is an integer multiple of the 4th power of the number of divisors of k.

Terms

    a(0) =121a(1) =125a(2) =511a(3) =767a(4) =895a(5) =1535a(6) =1919a(7) =2047a(8) =2559a(9) =2815a(10) =3071a(11) =3199a(12) =3327a(13) =3455a(14) =3711a(15) =3839a(16) =4223a(17) =4351a(18) =4479a(19) =4607a(20) =4735a(21) =4863a(22) =5262a(23) =5631a(24) =5726a(25) =5759a(26) =5902a(27) =5966a(28) =6014a(29) =6527

External references