20403220

素因数分解:

$2^2\times 5^1\times {\mathrm{307}}^1\times {\mathrm{3323}}^1$

素因数の和:3639

約数の個数: 24

約数和(自身を含む): 42999264

約数和(自身を除く): 22596044

約数列:

[1, 2, 4, 5, 10, 20, 307, 614, 1228, 1535, 3070, 3323, 6140, 6646, 13292, 16615, 33230, 66460, 1020161, 2040322, 4080644, 5100805, 10201610, 20403220]

約数ペア:

[(1, 20403220), (2, 10201610), (4, 5100805), (5, 4080644), (10, 2040322), (20, 1020161), (307, 66460), (614, 33230), (1228, 16615), (1535, 13292), (3070, 6646), (3323, 6140)]