18920516

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{2683}}^1$

素因数の和:2771

約数の個数: 24

約数和(自身を含む): 34720224

約数和(自身を除く): 15799708

約数列:

[1, 2, 4, 41, 43, 82, 86, 164, 172, 1763, 2683, 3526, 5366, 7052, 10732, 110003, 115369, 220006, 230738, 440012, 461476, 4730129, 9460258, 18920516]

約数ペア:

[(1, 18920516), (2, 9460258), (4, 4730129), (41, 461476), (43, 440012), (82, 230738), (86, 220006), (164, 115369), (172, 110003), (1763, 10732), (2683, 7052), (3526, 5366)]