21457550

素因数分解:

$2^1\times 5^2\times {\mathrm{181}}^1\times {\mathrm{2371}}^1$

素因数の和:2564

約数の個数: 24

約数和(自身を含む): 40148472

約数和(自身を除く): 18690922

約数列:

[1, 2, 5, 10, 25, 50, 181, 362, 905, 1810, 2371, 4525, 4742, 9050, 11855, 23710, 59275, 118550, 429151, 858302, 2145755, 4291510, 10728775, 21457550]

約数ペア:

[(1, 21457550), (2, 10728775), (5, 4291510), (10, 2145755), (25, 858302), (50, 429151), (181, 118550), (362, 59275), (905, 23710), (1810, 11855), (2371, 9050), (4525, 4742)]