Sum of the 4th powers of the divisors of n is divisible by n.

Terms

a(0) =1a(1) =34a(2) =84a(3) =156a(4) =364a(5) =492a(6) =1092a(7) =3444a(8) =5617a(9) =6396a(10) =11234a(11) =22468a(12) =33628a(13) =44772a(14) =67404a(15) =100884a(16) =157276a(17) =190978a(18) =292084a(19) =435708a(20) =437164a(21) =471828a(22) =549687a(23) =569772a(24) =709937a(25) =742612a(26) =763912a(27) =876252a(28) =986076a(29) =1099374