18431391

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{419}}^1$

素因数の和:507

約数の個数: 32

約数和(自身を含む): 28385280

約数和(自身を除く): 9953889

約数列:

[1, 3, 11, 31, 33, 43, 93, 129, 341, 419, 473, 1023, 1257, 1333, 1419, 3999, 4609, 12989, 13827, 14663, 18017, 38967, 43989, 54051, 142879, 198187, 428637, 558527, 594561, 1675581, 6143797, 18431391]

約数ペア:

[(1, 18431391), (3, 6143797), (11, 1675581), (31, 594561), (33, 558527), (43, 428637), (93, 198187), (129, 142879), (341, 54051), (419, 43989), (473, 38967), (1023, 18017), (1257, 14663), (1333, 13827), (1419, 12989), (3999, 4609)]