20420864

素因数分解:

$2^8\times {\mathrm{79769}}^1$

素因数の和:79785

約数の個数: 18

約数和(自身を含む): 40762470

約数和(自身を除く): 20341606

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 79769, 159538, 319076, 638152, 1276304, 2552608, 5105216, 10210432, 20420864]

約数ペア:

[(1, 20420864), (2, 10210432), (4, 5105216), (8, 2552608), (16, 1276304), (32, 638152), (64, 319076), (128, 159538), (256, 79769)]