Powerful numbers (A001694) whose sum of powerful divisors (including 1) is also powerful.

Terms

a(0) =1a(1) =64a(2) =243a(3) =441a(4) =1764a(5) =9800a(6) =15552a(7) =28224a(8) =41616a(9) =60516a(10) =82369a(11) =88200a(12) =189728a(13) =226576a(14) =329476a(15) =336200a(16) =648675a(17) =741321a(18) =968256a(19) =1317904a(20) =1428025a(21) =1707552a(22) =1943236a(23) =2039184a(24) =2056356a(25) =2381400a(26) =2446227a(27) =2798929a(28) =2965284a(29) =2986568