21497828

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{44417}}^1$

素因数の和:44443

約数の個数: 18

約数和(自身を含む): 41353158

約数和(自身を除く): 19855330

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 44417, 88834, 177668, 488587, 977174, 1954348, 5374457, 10748914, 21497828]

約数ペア:

[(1, 21497828), (2, 10748914), (4, 5374457), (11, 1954348), (22, 977174), (44, 488587), (121, 177668), (242, 88834), (484, 44417)]