81163916

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{61}}^1\times {\mathrm{1151}}^1$

素因数の和:1250

約数の個数: 36

約数和(自身を含む): 153490176

約数和(自身を除く): 72326260

約数列:

[1, 2, 4, 17, 34, 61, 68, 122, 244, 289, 578, 1037, 1151, 1156, 2074, 2302, 4148, 4604, 17629, 19567, 35258, 39134, 70211, 70516, 78268, 140422, 280844, 332639, 665278, 1193587, 1330556, 2387174, 4774348, 20290979, 40581958, 81163916]

約数ペア:

[(1, 81163916), (2, 40581958), (4, 20290979), (17, 4774348), (34, 2387174), (61, 1330556), (68, 1193587), (122, 665278), (244, 332639), (289, 280844), (578, 140422), (1037, 78268), (1151, 70516), (1156, 70211), (2074, 39134), (2302, 35258), (4148, 19567), (4604, 17629)]