Numbers k such that A051709(k)/A173557(k) is a positive natural number and a divisor of k.

Terms

a(0) =4a(1) =6a(2) =12a(3) =28a(4) =42a(5) =312a(6) =456a(7) =496a(8) =588a(9) =828a(10) =1080a(11) =1216a(12) =1242a(13) =1377a(14) =1560a(15) =4560a(16) =5964a(17) =7320a(18) =7480a(19) =7584a(20) =8128a(21) =11400a(22) =13728a(23) =14784a(24) =23760a(25) =33462a(26) =59400a(27) =59520a(28) =124020a(29) =147840