Superabundant [or super-abundant] numbers: n such that sigma(n)/n > sigma(m)/m for all m < n, sigma(n) being A000203(n), the sum of the divisors of n.

A004394

Superabundant [or super-abundant] numbers: n such that sigma(n)/n > sigma(m)/m for all m < n, sigma(n) being A000203(n), the sum of the divisors of n.

Terms

    a(0) =1a(1) =2a(2) =4a(3) =6a(4) =12a(5) =24a(6) =36a(7) =48a(8) =60a(9) =120a(10) =180a(11) =240a(12) =360a(13) =720a(14) =840a(15) =1260a(16) =1680a(17) =2520a(18) =5040a(19) =10080a(20) =15120a(21) =25200a(22) =27720a(23) =55440a(24) =110880a(25) =166320a(26) =277200a(27) =332640a(28) =554400a(29) =665280

External references