20210889

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{3253}}^1$

素因数の和:3384

約数の個数: 16

約数和(自身を含む): 28635200

約数和(自身を除く): 8424311

約数列:

[1, 3, 19, 57, 109, 327, 2071, 3253, 6213, 9759, 61807, 185421, 354577, 1063731, 6736963, 20210889]

約数ペア:

[(1, 20210889), (3, 6736963), (19, 1063731), (57, 354577), (109, 185421), (327, 61807), (2071, 9759), (3253, 6213)]