20672855

素因数分解:

$5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{4441}}^1$

素因数の和:4479

約数の個数: 24

約数和(自身を含む): 30383280

約数和(自身を除く): 9710425

約数列:

[1, 5, 7, 19, 35, 49, 95, 133, 245, 665, 931, 4441, 4655, 22205, 31087, 84379, 155435, 217609, 421895, 590653, 1088045, 2953265, 4134571, 20672855]

約数ペア:

[(1, 20672855), (5, 4134571), (7, 2953265), (19, 1088045), (35, 590653), (49, 421895), (95, 217609), (133, 155435), (245, 84379), (665, 31087), (931, 22205), (4441, 4655)]