21089868910

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2161}}^1\times {\mathrm{88721}}^1$

素因数の和:90900

約数の個数: 32

約数和(自身を含む): 41432464224

約数和(自身を除く): 20342595314

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 2161, 4322, 10805, 21610, 23771, 47542, 88721, 118855, 177442, 237710, 443605, 887210, 975931, 1951862, 4879655, 9759310, 191726081, 383452162, 958630405, 1917260810, 2108986891, 4217973782, 10544934455, 21089868910]

約数ペア:

[(1, 21089868910), (2, 10544934455), (5, 4217973782), (10, 2108986891), (11, 1917260810), (22, 958630405), (55, 383452162), (110, 191726081), (2161, 9759310), (4322, 4879655), (10805, 1951862), (21610, 975931), (23771, 887210), (47542, 443605), (88721, 237710), (118855, 177442)]