20808747

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{1307}}^1$

素因数の和:1403

約数の個数: 24

約数和(自身を含む): 31627440

約数和(自身を除く): 10818693

約数列:

[1, 3, 9, 29, 61, 87, 183, 261, 549, 1307, 1769, 3921, 5307, 11763, 15921, 37903, 79727, 113709, 239181, 341127, 717543, 2312083, 6936249, 20808747]

約数ペア:

[(1, 20808747), (3, 6936249), (9, 2312083), (29, 717543), (61, 341127), (87, 239181), (183, 113709), (261, 79727), (549, 37903), (1307, 15921), (1769, 11763), (3921, 5307)]