128838820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{271}}^1\times {\mathrm{2161}}^1$

素因数の和:2452

約数の個数: 48

約数和(自身を含む): 296384256

約数和(自身を除く): 167545436

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 271, 542, 1084, 1355, 2161, 2710, 2981, 4322, 5420, 5962, 8644, 10805, 11924, 14905, 21610, 23771, 29810, 43220, 47542, 59620, 95084, 118855, 237710, 475420, 585631, 1171262, 2342524, 2928155, 5856310, 6441941, 11712620, 12883882, 25767764, 32209705, 64419410, 128838820]

約数ペア:

[(1, 128838820), (2, 64419410), (4, 32209705), (5, 25767764), (10, 12883882), (11, 11712620), (20, 6441941), (22, 5856310), (44, 2928155), (55, 2342524), (110, 1171262), (220, 585631), (271, 475420), (542, 237710), (1084, 118855), (1355, 95084), (2161, 59620), (2710, 47542), (2981, 43220), (4322, 29810), (5420, 23771), (5962, 21610), (8644, 14905), (10805, 11924)]