21253530

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{13367}}^1$

素因数の和:13430

約数の個数: 32

約数和(自身を含む): 51974784

約数和(自身を除く): 30721254

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 53, 106, 159, 265, 318, 530, 795, 1590, 13367, 26734, 40101, 66835, 80202, 133670, 200505, 401010, 708451, 1416902, 2125353, 3542255, 4250706, 7084510, 10626765, 21253530]

約数ペア:

[(1, 21253530), (2, 10626765), (3, 7084510), (5, 4250706), (6, 3542255), (10, 2125353), (15, 1416902), (30, 708451), (53, 401010), (106, 200505), (159, 133670), (265, 80202), (318, 66835), (530, 40101), (795, 26734), (1590, 13367)]