21445587

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{449}}^1$

素因数の和:548

約数の個数: 32

約数和(自身を含む): 33480000

約数和(自身を除く): 12034413

約数列:

[1, 3, 9, 27, 29, 61, 87, 183, 261, 449, 549, 783, 1347, 1647, 1769, 4041, 5307, 12123, 13021, 15921, 27389, 39063, 47763, 82167, 117189, 246501, 351567, 739503, 794281, 2382843, 7148529, 21445587]

約数ペア:

[(1, 21445587), (3, 7148529), (9, 2382843), (27, 794281), (29, 739503), (61, 351567), (87, 246501), (183, 117189), (261, 82167), (449, 47763), (549, 39063), (783, 27389), (1347, 15921), (1647, 13021), (1769, 12123), (4041, 5307)]