Numbers n that minimize sigma(n) / (n^(1-delta) d(n)) for some delta > 0, where d = divisor count = A000005, sigma = divisor sum = A000203.

A263572

Numbers n that minimize sigma(n) / (n^(1-delta) d(n)) for some delta > 0, where d = divisor count = A000005, sigma = divisor sum = A000203.

Terms

    a(0) =1a(1) =2a(2) =6a(3) =12a(4) =60a(5) =120a(6) =360a(7) =2520a(8) =5040a(9) =55440a(10) =720720a(11) =1441440a(12) =4324320a(13) =21621600a(14) =367567200a(15) =6983776800a(16) =13967553600a(17) =321253732800

External references