Numbers m such that k*m = Sum_{j|m, j < m} sigma(j), where k >= 1 is an integer.
A224488
Numbers m such that k*m = Sum_{j|m, j < m} sigma(j), where k >= 1 is an integer.
Terms
- a(0) =4a(1) =10a(2) =42a(3) =90a(4) =2448a(5) =4680a(6) =27144a(7) =117000a(8) =154498509a(9) =222970077a(10) =11049088050a(11) =63554826816
External references
- oeis: A224488