Least positive integer m such that m + n divides sigma(m^2) + sigma(n^2), where sigma(k) is the sum of all positive divisors of k.
A248054
Least positive integer m such that m + n divides sigma(m^2) + sigma(n^2), where sigma(k) is the sum of all positive divisors of k.
Terms
- a(0) =1a(1) =3a(2) =2a(3) =7a(4) =24a(5) =34a(6) =3a(7) =81a(8) =209a(9) =16a(10) =63a(11) =25a(12) =7a(13) =20a(14) =140a(15) =10a(16) =3a(17) =10a(18) =22a(19) =2a(20) =39a(21) =4a(22) =35a(23) =5a(24) =4a(25) =2a(26) =28a(27) =27a(28) =75a(29) =41
External references
- oeis: A248054