Numbers k for which sigma(k)/k - 8/9 is an integer.

Terms

a(0) =252a(1) =4464a(2) =73152a(3) =7448760a(4) =41713056a(5) =48117888a(6) =94112928a(7) =301953024a(8) =975576960a(9) =1773584640a(10) =10759746816a(11) =46351678464a(12) =77308821504a(13) =103448378880a(14) =196718837760a(15) =233400061440a(16) =409698051840a(17) =939767546880