393020

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{457}}^1$

素因数の和:509

約数の個数: 24

約数和(自身を含む): 846384

約数和(自身を除く): 453364

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 457, 860, 914, 1828, 2285, 4570, 9140, 19651, 39302, 78604, 98255, 196510, 393020]

約数ペア:

[(1, 393020), (2, 196510), (4, 98255), (5, 78604), (10, 39302), (20, 19651), (43, 9140), (86, 4570), (172, 2285), (215, 1828), (430, 914), (457, 860)]