21073401

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{263}}^1\times {\mathrm{307}}^1$

素因数の和:605

約数の個数: 24

約数和(自身を含む): 31711680

約数和(自身を除く): 10638279

約数列:

[1, 3, 9, 29, 87, 261, 263, 307, 789, 921, 2367, 2763, 7627, 8903, 22881, 26709, 68643, 80127, 80741, 242223, 726669, 2341489, 7024467, 21073401]

約数ペア:

[(1, 21073401), (3, 7024467), (9, 2341489), (29, 726669), (87, 242223), (261, 80741), (263, 80127), (307, 68643), (789, 26709), (921, 22881), (2367, 8903), (2763, 7627)]