21618356

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{18701}}^1$

素因数の和:18739

約数の個数: 18

約数和(自身を含む): 40190598

約数和(自身を除く): 18572242

約数列:

[1, 2, 4, 17, 34, 68, 289, 578, 1156, 18701, 37402, 74804, 317917, 635834, 1271668, 5404589, 10809178, 21618356]

約数ペア:

[(1, 21618356), (2, 10809178), (4, 5404589), (17, 1271668), (34, 635834), (68, 317917), (289, 74804), (578, 37402), (1156, 18701)]