Odd nonsquarefree numbers k such that {sum of unitary divisors of k} plus {sum of squarefree divisors of k} >= 2*k.
A389079
Odd nonsquarefree numbers k such that {sum of unitary divisors of k} plus {sum of squarefree divisors of k} >= 2*k.
Terms
- a(0) =315a(1) =495a(2) =585a(3) =3465a(4) =4095a(5) =5355a(6) =5775a(7) =5985a(8) =6435a(9) =6825a(10) =7245a(11) =8085a(12) =8415a(13) =8925a(14) =9009a(15) =9135a(16) =9405a(17) =9555a(18) =9765a(19) =9945a(20) =9975a(21) =10725a(22) =11115a(23) =11385a(24) =11655a(25) =11781a(26) =12075a(27) =12495a(28) =12705a(29) =12915
External references
- oeis: A389079