21377259

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{193}}^1\times {\mathrm{397}}^1$

素因数の和:627

約数の個数: 24

約数和(自身を含む): 32120192

約数和(自身を除く): 10742933

約数列:

[1, 3, 9, 31, 93, 193, 279, 397, 579, 1191, 1737, 3573, 5983, 12307, 17949, 36921, 53847, 76621, 110763, 229863, 689589, 2375251, 7125753, 21377259]

約数ペア:

[(1, 21377259), (3, 7125753), (9, 2375251), (31, 689589), (93, 229863), (193, 110763), (279, 76621), (397, 53847), (579, 36921), (1191, 17949), (1737, 12307), (3573, 5983)]