20811740

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61211}}^1$

素因数の和:61237

約数の個数: 24

約数和(自身を含む): 46276272

約数和(自身を除く): 25464532

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 61211, 122422, 244844, 306055, 612110, 1040587, 1224220, 2081174, 4162348, 5202935, 10405870, 20811740]

約数ペア:

[(1, 20811740), (2, 10405870), (4, 5202935), (5, 4162348), (10, 2081174), (17, 1224220), (20, 1040587), (34, 612110), (68, 306055), (85, 244844), (170, 122422), (340, 61211)]