Numbers which are the sum of their proper divisors and their anti-divisors.
A219053
Numbers which are the sum of their proper divisors and their anti-divisors.
Terms
- a(0) =3a(1) =19a(2) =131a(3) =139a(4) =649a(5) =3649a(6) =4181a(7) =5881a(8) =13369a(9) =29501a(10) =65789a(11) =37548761a(12) =63919409a(13) =2471800109
External references
- oeis: A219053