18998145

素因数分解:

$3^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{769}}^1$

素因数の和:847

約数の個数: 40

約数和(自身を含む): 34659240

約数和(自身を除く): 15661095

約数列:

[1, 3, 5, 9, 15, 27, 45, 61, 81, 135, 183, 305, 405, 549, 769, 915, 1647, 2307, 2745, 3845, 4941, 6921, 8235, 11535, 20763, 24705, 34605, 46909, 62289, 103815, 140727, 234545, 311445, 422181, 703635, 1266543, 2110905, 3799629, 6332715, 18998145]

約数ペア:

[(1, 18998145), (3, 6332715), (5, 3799629), (9, 2110905), (15, 1266543), (27, 703635), (45, 422181), (61, 311445), (81, 234545), (135, 140727), (183, 103815), (305, 62289), (405, 46909), (549, 34605), (769, 24705), (915, 20763), (1647, 11535), (2307, 8235), (2745, 6921), (3845, 4941)]