21363260

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{24841}}^1$

素因数の和:24893

約数の個数: 24

約数和(自身を含む): 45908016

約数和(自身を除く): 24544756

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 24841, 49682, 99364, 124205, 248410, 496820, 1068163, 2136326, 4272652, 5340815, 10681630, 21363260]

約数ペア:

[(1, 21363260), (2, 10681630), (4, 5340815), (5, 4272652), (10, 2136326), (20, 1068163), (43, 496820), (86, 248410), (172, 124205), (215, 99364), (430, 49682), (860, 24841)]