402486340

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{490837}}^1$

素因数の和:490887

約数の個数: 24

約数和(自身を含む): 865838232

約数和(自身を除く): 463351892

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 490837, 981674, 1963348, 2454185, 4908370, 9816740, 20124317, 40248634, 80497268, 100621585, 201243170, 402486340]

約数ペア:

[(1, 402486340), (2, 201243170), (4, 100621585), (5, 80497268), (10, 40248634), (20, 20124317), (41, 9816740), (82, 4908370), (164, 2454185), (205, 1963348), (410, 981674), (820, 490837)]