Numbers k such that the sum of the cubes of divisors of k is a prime.

Terms

a(0) =4a(1) =9a(2) =121a(3) =36481a(4) =72361a(5) =146689a(6) =259081a(7) =654481a(8) =683929a(9) =786769a(10) =1985281a(11) =2036329a(12) =3193369a(13) =3636649a(14) =3798601a(15) =4583881a(16) =5031049a(17) =5470921a(18) =5555449a(19) =6135529a(20) =6713281a(21) =7284601a(22) =7778521a(23) =16589329a(24) =20403289a(25) =21557449a(26) =22915369a(27) =26739241a(28) =27426169a(29) =30261001