Numbers k that divide sigma(k) + d(k), where d(k) is the number of divisors of k and sigma(k) is their sum.

A056076

Numbers k that divide sigma(k) + d(k), where d(k) is the number of divisors of k and sigma(k) is their sum.

Terms

    a(0) =1a(1) =3a(2) =14a(3) =52a(4) =60a(5) =130a(6) =184a(7) =656a(8) =5472a(9) =8648a(10) =12008a(11) =34688a(12) =2118656a(13) =2500704a(14) =33721216a(15) =40575616a(16) =59376256a(17) =89397016a(18) =99523456a(19) =134438912a(20) =150441856a(21) =173706136a(22) =283417216a(23) =537346048a(24) =1082640256a(25) =6801628304a(26) =91707741184

External references