Sum of the cubes of the divisors of n^3.

Terms

a(0) =1a(1) =585a(2) =20440a(3) =299593a(4) =1968876a(5) =11957400a(6) =40471600a(7) =153391689a(8) =402321277a(9) =1151792460a(10) =2359720584a(11) =6123680920a(12) =10609328380a(13) =23675886000a(14) =40243825440a(15) =78536544841a(16) =118612018980a(17) =235357947045a(18) =322734750520a(19) =589861467468a(20) =827239504000