21513564

素因数分解:

$2^2\times 3^2\times {\mathrm{597599}}^1$

素因数の和:597609

約数の個数: 18

約数和(自身を含む): 54381600

約数和(自身を除く): 32868036

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 597599, 1195198, 1792797, 2390396, 3585594, 5378391, 7171188, 10756782, 21513564]

約数ペア:

[(1, 21513564), (2, 10756782), (3, 7171188), (4, 5378391), (6, 3585594), (9, 2390396), (12, 1792797), (18, 1195198), (36, 597599)]