Numbers k such that phi(k) divides sigma_5(k).

Terms

a(0) =1a(1) =2a(2) =3a(3) =6a(4) =12a(5) =14a(6) =15a(7) =30a(8) =35a(9) =42a(10) =46a(11) =56a(12) =70a(13) =78a(14) =105a(15) =134a(16) =138a(17) =140a(18) =161a(19) =168a(20) =184a(21) =190a(22) =210a(23) =230a(24) =248a(25) =264a(26) =270a(27) =299a(28) =322a(29) =357