86665640

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{50387}}^1$

素因数の和:50441

約数の個数: 32

約数和(自身を含む): 199536480

約数和(自身を除く): 112870840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 50387, 100774, 201548, 251935, 403096, 503870, 1007740, 2015480, 2166641, 4333282, 8666564, 10833205, 17333128, 21666410, 43332820, 86665640]

約数ペア:

[(1, 86665640), (2, 43332820), (4, 21666410), (5, 17333128), (8, 10833205), (10, 8666564), (20, 4333282), (40, 2166641), (43, 2015480), (86, 1007740), (172, 503870), (215, 403096), (344, 251935), (430, 201548), (860, 100774), (1720, 50387)]