21129123560

素因数分解:

$2^3\times 5^1\times {\mathrm{528228089}}^1$

素因数の和:528228100

約数の個数: 16

約数和(自身を含む): 47540528100

約数和(自身を除く): 26411404540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 528228089, 1056456178, 2112912356, 2641140445, 4225824712, 5282280890, 10564561780, 21129123560]

約数ペア:

[(1, 21129123560), (2, 10564561780), (4, 5282280890), (5, 4225824712), (8, 2641140445), (10, 2112912356), (20, 1056456178), (40, 528228089)]