Odd numbers k for which A000005(k) >= A017665(k), where A000005 is the number of divisors function, and A017665 is the numerator of the abundancy ratio, sigma(k)/k.
A388269
Odd numbers k for which A000005(k) >= A017665(k), where A000005 is the number of divisors function, and A017665 is the numerator of the abundancy ratio, sigma(k)/k.
Terms
- a(0) =1a(1) =544635a(2) =931095a(3) =6517665a(4) =14705145a(5) =15828615a(6) =22330035a(7) =45623655a(8) =49348035a(9) =110800305a(10) =161756595a(11) =173369889a(12) =249987465a(13) =345436245a(14) =593107515a(15) =775602135a(16) =779372685a(17) =866849445a(18) =1573450515a(19) =1598690115a(20) =1870569855a(21) =2253808557a(22) =2749862115a(23) =2947288113a(24) =7108165449a(25) =10082827755a(26) =11190830805a(27) =11269042785a(28) =14827687875
External references
- oeis: A388269