21801564

素因数分解:

$2^2\times 3^2\times {\mathrm{605599}}^1$

素因数の和:605609

約数の個数: 18

約数和(自身を含む): 55109600

約数和(自身を除く): 33308036

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 605599, 1211198, 1816797, 2422396, 3633594, 5450391, 7267188, 10900782, 21801564]

約数ペア:

[(1, 21801564), (2, 10900782), (3, 7267188), (4, 5450391), (6, 3633594), (9, 2422396), (12, 1816797), (18, 1211198), (36, 605599)]