21436317

素因数分解:

$3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{193}}^1$

素因数の和:290

約数の個数: 48

約数和(自身を含む): 37285248

約数和(自身を除く): 15848931

約数列:

[1, 3, 7, 9, 21, 41, 43, 63, 123, 129, 193, 287, 301, 369, 387, 579, 861, 903, 1351, 1737, 1763, 2583, 2709, 4053, 5289, 7913, 8299, 12159, 12341, 15867, 23739, 24897, 37023, 55391, 58093, 71217, 74691, 111069, 166173, 174279, 340259, 498519, 522837, 1020777, 2381813, 3062331, 7145439, 21436317]

約数ペア:

[(1, 21436317), (3, 7145439), (7, 3062331), (9, 2381813), (21, 1020777), (41, 522837), (43, 498519), (63, 340259), (123, 174279), (129, 166173), (193, 111069), (287, 74691), (301, 71217), (369, 58093), (387, 55391), (579, 37023), (861, 24897), (903, 23739), (1351, 15867), (1737, 12341), (1763, 12159), (2583, 8299), (2709, 7913), (4053, 5289)]