20505584

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{263}}^1\times {\mathrm{443}}^1$

素因数の和:725

約数の個数: 40

約数和(自身を含む): 43604352

約数和(自身を除く): 23098768

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 263, 443, 526, 886, 1052, 1772, 2104, 2893, 3544, 4208, 4873, 5786, 7088, 9746, 11572, 19492, 23144, 38984, 46288, 77968, 116509, 233018, 466036, 932072, 1281599, 1864144, 2563198, 5126396, 10252792, 20505584]

約数ペア:

[(1, 20505584), (2, 10252792), (4, 5126396), (8, 2563198), (11, 1864144), (16, 1281599), (22, 932072), (44, 466036), (88, 233018), (176, 116509), (263, 77968), (443, 46288), (526, 38984), (886, 23144), (1052, 19492), (1772, 11572), (2104, 9746), (2893, 7088), (3544, 5786), (4208, 4873)]