13727889

素因数分解:

$3^2\times 7^3\times {\mathrm{4447}}^1$

素因数の和:4474

約数の個数: 24

約数和(自身を含む): 23129600

約数和(自身を除く): 9401711

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 3087, 4447, 13341, 31129, 40023, 93387, 217903, 280161, 653709, 1525321, 1961127, 4575963, 13727889]

約数ペア:

[(1, 13727889), (3, 4575963), (7, 1961127), (9, 1525321), (21, 653709), (49, 280161), (63, 217903), (147, 93387), (343, 40023), (441, 31129), (1029, 13341), (3087, 4447)]