21142084

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{18289}}^1$

素因数の和:18327

約数の個数: 18

約数和(自身を含む): 39305210

約数和(自身を除く): 18163126

約数列:

[1, 2, 4, 17, 34, 68, 289, 578, 1156, 18289, 36578, 73156, 310913, 621826, 1243652, 5285521, 10571042, 21142084]

約数ペア:

[(1, 21142084), (2, 10571042), (4, 5285521), (17, 1243652), (34, 621826), (68, 310913), (289, 73156), (578, 36578), (1156, 18289)]