Numbers whose sum of divisors equals the sum of their anti-divisors.

Terms

a(0) =11a(1) =22a(2) =33a(3) =65a(4) =82a(5) =117a(6) =218a(7) =483a(8) =508a(9) =537a(10) =6430a(11) =21541a(12) =117818a(13) =3589646a(14) =7231219a(15) =8515767a(16) =13050345a(17) =47245905a(18) =50414595a(19) =104335023a(20) =217728002a(21) =1217532421a(22) =1573368218a(23) =1875543429a(24) =2269058065a(25) =11902221245a(26) =12196454655a(27) =12658724029