21877281

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{769}}^1$

素因数の和:913

約数の個数: 24

約数和(自身を含む): 33033000

約数和(自身を除く): 11155719

約数列:

[1, 3, 9, 29, 87, 109, 261, 327, 769, 981, 2307, 3161, 6921, 9483, 22301, 28449, 66903, 83821, 200709, 251463, 754389, 2430809, 7292427, 21877281]

約数ペア:

[(1, 21877281), (3, 7292427), (9, 2430809), (29, 754389), (87, 251463), (109, 200709), (261, 83821), (327, 66903), (769, 28449), (981, 22301), (2307, 9483), (3161, 6921)]