21128724

素因数分解:

$2^2\times 3^2\times {\mathrm{586909}}^1$

素因数の和:586919

約数の個数: 18

約数和(自身を含む): 53408810

約数和(自身を除く): 32280086

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 586909, 1173818, 1760727, 2347636, 3521454, 5282181, 7042908, 10564362, 21128724]

約数ペア:

[(1, 21128724), (2, 10564362), (3, 7042908), (4, 5282181), (6, 3521454), (9, 2347636), (12, 1760727), (18, 1173818), (36, 586909)]