20864295

素因数分解:

$3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{5869}}^1$

素因数の和:5959

約数の個数: 24

約数和(自身を含む): 36628800

約数和(自身を除く): 15764505

約数列:

[1, 3, 5, 9, 15, 45, 79, 237, 395, 711, 1185, 3555, 5869, 17607, 29345, 52821, 88035, 264105, 463651, 1390953, 2318255, 4172859, 6954765, 20864295]

約数ペア:

[(1, 20864295), (3, 6954765), (5, 4172859), (9, 2318255), (15, 1390953), (45, 463651), (79, 264105), (237, 88035), (395, 52821), (711, 29345), (1185, 17607), (3555, 5869)]