18880340

素因数分解:

$2^2\times 5^1\times {\mathrm{944017}}^1$

素因数の和:944026

約数の個数: 12

約数和(自身を含む): 39648756

約数和(自身を除く): 20768416

約数列:

[1, 2, 4, 5, 10, 20, 944017, 1888034, 3776068, 4720085, 9440170, 18880340]

約数ペア:

[(1, 18880340), (2, 9440170), (4, 4720085), (5, 3776068), (10, 1888034), (20, 944017)]