20837020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{25411}}^1$

素因数の和:25461

約数の個数: 24

約数和(自身を含む): 44826768

約数和(自身を除く): 23989748

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 25411, 50822, 101644, 127055, 254110, 508220, 1041851, 2083702, 4167404, 5209255, 10418510, 20837020]

約数ペア:

[(1, 20837020), (2, 10418510), (4, 5209255), (5, 4167404), (10, 2083702), (20, 1041851), (41, 508220), (82, 254110), (164, 127055), (205, 101644), (410, 50822), (820, 25411)]