20804501240

素因数分解:

$2^3\times 5^1\times {\mathrm{541}}^1\times {\mathrm{821}}^1\times {\mathrm{1171}}^1$

素因数の和:2544

約数の個数: 64

約数和(自身を含む): 46993871520

約数和(自身を除く): 26189370280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 541, 821, 1082, 1171, 1642, 2164, 2342, 2705, 3284, 4105, 4328, 4684, 5410, 5855, 6568, 8210, 9368, 10820, 11710, 16420, 21640, 23420, 32840, 46840, 444161, 633511, 888322, 961391, 1267022, 1776644, 1922782, 2220805, 2534044, 3167555, 3553288, 3845564, 4441610, 4806955, 5068088, 6335110, 7691128, 8883220, 9613910, 12670220, 17766440, 19227820, 25340440, 38455640, 520112531, 1040225062, 2080450124, 2600562655, 4160900248, 5201125310, 10402250620, 20804501240]

約数ペア:

[(1, 20804501240), (2, 10402250620), (4, 5201125310), (5, 4160900248), (8, 2600562655), (10, 2080450124), (20, 1040225062), (40, 520112531), (541, 38455640), (821, 25340440), (1082, 19227820), (1171, 17766440), (1642, 12670220), (2164, 9613910), (2342, 8883220), (2705, 7691128), (3284, 6335110), (4105, 5068088), (4328, 4806955), (4684, 4441610), (5410, 3845564), (5855, 3553288), (6568, 3167555), (8210, 2534044), (9368, 2220805), (10820, 1922782), (11710, 1776644), (16420, 1267022), (21640, 961391), (23420, 888322), (32840, 633511), (46840, 444161)]