Numbers whose deficiency is 20: sigma(k) - 2*k = -20.

A223607

Numbers whose deficiency is 20: sigma(k) - 2*k = -20.

Terms

    a(0) =46a(1) =154a(2) =190a(3) =2656a(4) =6490a(5) =44650a(6) =318250a(7) =1360810a(8) =1503370a(9) =1788490a(10) =3214090a(11) =103712410a(12) =3915380170a(13) =6077111050a(14) =9796360330a(15) =10828121356

External references