2156140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{15401}}^1$

素因数の和:15417

約数の個数: 24

約数和(自身を含む): 5175072

約数和(自身を除く): 3018932

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 15401, 30802, 61604, 77005, 107807, 154010, 215614, 308020, 431228, 539035, 1078070, 2156140]

約数ペア:

[(1, 2156140), (2, 1078070), (4, 539035), (5, 431228), (7, 308020), (10, 215614), (14, 154010), (20, 107807), (28, 77005), (35, 61604), (70, 30802), (140, 15401)]