21125259

素因数分解:

$3^3\times {\mathrm{409}}^1\times {\mathrm{1913}}^1$

素因数の和:2331

約数の個数: 16

約数和(自身を含む): 31389600

約数和(自身を除く): 10264341

約数列:

[1, 3, 9, 27, 409, 1227, 1913, 3681, 5739, 11043, 17217, 51651, 782417, 2347251, 7041753, 21125259]

約数ペア:

[(1, 21125259), (3, 7041753), (9, 2347251), (27, 782417), (409, 51651), (1227, 17217), (1913, 11043), (3681, 5739)]