Coreful 4-abundant numbers: numbers k such that csigma(k) > 4*k, where csigma(k) is the sum of the coreful divisors of k (A057723).
A340110
Coreful 4-abundant numbers: numbers k such that csigma(k) > 4*k, where csigma(k) is the sum of the coreful divisors of k (A057723).
Terms
- a(0) =10584000a(1) =12700800a(2) =15876000a(3) =19051200a(4) =21168000a(5) =22226400a(6) =25401600a(7) =29635200a(8) =31752000a(9) =37044000a(10) =38102400a(11) =42336000a(12) =44452800a(13) =47628000a(14) =50803200a(15) =52920000a(16) =55566000a(17) =57153600a(18) =59270400a(19) =63504000a(20) =64033200a(21) =66679200a(22) =74088000a(23) =76204800a(24) =79380000a(25) =84672000
External references
- oeis: A340110