20008807

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{311}}^1$

素因数の和:439

約数の個数: 24

約数和(自身を含む): 25395552

約数和(自身を除く): 5386745

約数列:

[1, 7, 13, 49, 91, 101, 311, 637, 707, 1313, 2177, 4043, 4949, 9191, 15239, 28301, 31411, 64337, 198107, 219877, 408343, 1539139, 2858401, 20008807]

約数ペア:

[(1, 20008807), (7, 2858401), (13, 1539139), (49, 408343), (91, 219877), (101, 198107), (311, 64337), (637, 31411), (707, 28301), (1313, 15239), (2177, 9191), (4043, 4949)]