18009207

素因数分解:

$3^2\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{241}}^1$

素因数の和:308

約数の個数: 36

約数和(自身を含む): 28767024

約数和(自身を除く): 10757817

約数列:

[1, 3, 9, 19, 23, 57, 69, 171, 207, 241, 361, 437, 723, 1083, 1311, 2169, 3249, 3933, 4579, 5543, 8303, 13737, 16629, 24909, 41211, 49887, 74727, 87001, 105317, 261003, 315951, 783009, 947853, 2001023, 6003069, 18009207]

約数ペア:

[(1, 18009207), (3, 6003069), (9, 2001023), (19, 947853), (23, 783009), (57, 315951), (69, 261003), (171, 105317), (207, 87001), (241, 74727), (361, 49887), (437, 41211), (723, 24909), (1083, 16629), (1311, 13737), (2169, 8303), (3249, 5543), (3933, 4579)]