Numbers k such that sigma(k) = 2*usigma(k).

Terms

a(0) =108a(1) =540a(2) =756a(3) =1188a(4) =1404a(5) =1836a(6) =2052a(7) =2484a(8) =3132a(9) =3348a(10) =3780a(11) =3996a(12) =4428a(13) =4644a(14) =5076a(15) =5724a(16) =5940a(17) =6372a(18) =6588a(19) =7020a(20) =7236a(21) =7668a(22) =7884a(23) =8316a(24) =8532a(25) =8964a(26) =9180a(27) =9612a(28) =9828a(29) =10260