21318111

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{701}}^1$

素因数の和:847

約数の個数: 24

約数和(自身を含む): 32123520

約数和(自身を除く): 10805409

約数列:

[1, 3, 9, 31, 93, 109, 279, 327, 701, 981, 2103, 3379, 6309, 10137, 21731, 30411, 65193, 76409, 195579, 229227, 687681, 2368679, 7106037, 21318111]

約数ペア:

[(1, 21318111), (3, 7106037), (9, 2368679), (31, 687681), (93, 229227), (109, 195579), (279, 76409), (327, 65193), (701, 30411), (981, 21731), (2103, 10137), (3379, 6309)]