19972790

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{6911}}^1$

素因数の和:6952

約数の個数: 24

約数和(自身を含む): 38195712

約数和(自身を除く): 18222922

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 289, 578, 1445, 2890, 6911, 13822, 34555, 69110, 117487, 234974, 587435, 1174870, 1997279, 3994558, 9986395, 19972790]

約数ペア:

[(1, 19972790), (2, 9986395), (5, 3994558), (10, 1997279), (17, 1174870), (34, 587435), (85, 234974), (170, 117487), (289, 69110), (578, 34555), (1445, 13822), (2890, 6911)]