Numbers having exactly six anti-divisors.

Terms

a(0) =32a(1) =49a(2) =50a(3) =60a(4) =72a(5) =81a(6) =121a(7) =128a(8) =145a(9) =180a(10) =181a(11) =196a(12) =264a(13) =288a(14) =324a(15) =361a(16) =480a(17) =529a(18) =684a(19) =685a(20) =961a(21) =1156a(22) =1405a(23) =2304a(24) =2401a(25) =2500a(26) =2521a(27) =2704a(28) =2809a(29) =4624