Numbers k with abundance 90: sigma(k) - 2*k = 90.

A389703

Numbers k with abundance 90: sigma(k) - 2*k = 90.

Terms

    a(0) =306a(1) =2368a(2) =28035a(3) =46035a(4) =49875a(5) =107776a(6) =654675a(7) =33181696a(8) =126022995a(9) =8583970816a(10) =11844817875a(11) =137415098368

External references