Sum of cubes of divisors is a square.

Terms

a(0) =1a(1) =2a(2) =345a(3) =690a(4) =47196a(5) =46248900a(6) =53262468a(7) =71315748a(8) =140553735a(9) =188194335a(10) =215515727a(11) =281107470a(12) =288564647a(13) =292978595a(14) =310129096a(15) =376388670a(16) =431031454a(17) =577129294a(18) =585957190a(19) =1474108335a(20) =2133051720a(21) =2489605188a(22) =2948216670a(23) =3270679304a(24) =4043104611a(25) =5142743032