20919844

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{11057}}^1$

素因数の和:11115

約数の個数: 24

約数和(自身を含む): 40870368

約数和(自身を除く): 19950524

約数列:

[1, 2, 4, 11, 22, 43, 44, 86, 172, 473, 946, 1892, 11057, 22114, 44228, 121627, 243254, 475451, 486508, 950902, 1901804, 5229961, 10459922, 20919844]

約数ペア:

[(1, 20919844), (2, 10459922), (4, 5229961), (11, 1901804), (22, 950902), (43, 486508), (44, 475451), (86, 243254), (172, 121627), (473, 44228), (946, 22114), (1892, 11057)]