21261273

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{1583}}^1$

素因数の和:1645

約数の個数: 24

約数和(自身を含む): 32022144

約数和(自身を除く): 10760871

約数列:

[1, 3, 11, 33, 37, 111, 121, 363, 407, 1221, 1583, 4477, 4749, 13431, 17413, 52239, 58571, 175713, 191543, 574629, 644281, 1932843, 7087091, 21261273]

約数ペア:

[(1, 21261273), (3, 7087091), (11, 1932843), (33, 644281), (37, 574629), (111, 191543), (121, 175713), (363, 58571), (407, 52239), (1221, 17413), (1583, 13431), (4477, 4749)]