Numbers n whose abundance is 64: sigma(n) - 2n = 64.

Terms

a(0) =108a(1) =220a(2) =6808a(3) =8968a(4) =14008a(5) =24448a(6) =66928a(7) =552568a(8) =786208a(9) =1020568a(10) =5303488a(11) =8229568a(12) =10001848a(13) =133685248a(14) =499722448a(15) =2608895488a(16) =4733164768a(17) =7163795488a(18) =13707973408a(19) =14468025568a(20) =16122444736a(21) =27339731968a(22) =34351218688a(23) =34672397728a(24) =35371084288a(25) =69657461248