21052086

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{647}}^1$

素因数の和:709

約数の個数: 64

約数和(自身を含む): 50388480

約数和(自身を除く): 29336394

約数列:

[1, 2, 3, 6, 11, 17, 22, 29, 33, 34, 51, 58, 66, 87, 102, 174, 187, 319, 374, 493, 561, 638, 647, 957, 986, 1122, 1294, 1479, 1914, 1941, 2958, 3882, 5423, 7117, 10846, 10999, 14234, 16269, 18763, 21351, 21998, 32538, 32997, 37526, 42702, 56289, 65994, 112578, 120989, 206393, 241978, 318971, 362967, 412786, 619179, 637942, 725934, 956913, 1238358, 1913826, 3508681, 7017362, 10526043, 21052086]

約数ペア:

[(1, 21052086), (2, 10526043), (3, 7017362), (6, 3508681), (11, 1913826), (17, 1238358), (22, 956913), (29, 725934), (33, 637942), (34, 619179), (51, 412786), (58, 362967), (66, 318971), (87, 241978), (102, 206393), (174, 120989), (187, 112578), (319, 65994), (374, 56289), (493, 42702), (561, 37526), (638, 32997), (647, 32538), (957, 21998), (986, 21351), (1122, 18763), (1294, 16269), (1479, 14234), (1914, 10999), (1941, 10846), (2958, 7117), (3882, 5423)]