Numbers n for which A091255(n, sigma(n)) = n.

Terms

a(0) =1a(1) =6a(2) =28a(3) =120a(4) =312a(5) =428a(6) =456a(7) =496a(8) =504a(9) =672a(10) =760a(11) =6552a(12) =8128a(13) =30240a(14) =31452a(15) =32760a(16) =429240a(17) =523776a(18) =2178540a(19) =5009850a(20) =7505976a(21) =23569920a(22) =33550336a(23) =45532800a(24) =142990848a(25) =186076800a(26) =379975680