19911564

素因数分解:

$2^2\times 3^2\times {\mathrm{553099}}^1$

素因数の和:553109

約数の個数: 18

約数和(自身を含む): 50332100

約数和(自身を除く): 30420536

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 553099, 1106198, 1659297, 2212396, 3318594, 4977891, 6637188, 9955782, 19911564]

約数ペア:

[(1, 19911564), (2, 9955782), (3, 6637188), (4, 4977891), (6, 3318594), (9, 2212396), (12, 1659297), (18, 1106198), (36, 553099)]