21901491

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{3329}}^1$

素因数の和:3395

約数の個数: 24

約数和(自身を含む): 34285680

約数和(自身を除く): 12384189

約数列:

[1, 3, 9, 17, 43, 51, 129, 153, 387, 731, 2193, 3329, 6579, 9987, 29961, 56593, 143147, 169779, 429441, 509337, 1288323, 2433499, 7300497, 21901491]

約数ペア:

[(1, 21901491), (3, 7300497), (9, 2433499), (17, 1288323), (43, 509337), (51, 429441), (129, 169779), (153, 143147), (387, 56593), (731, 29961), (2193, 9987), (3329, 6579)]