21136040

素因数分解:

$2^3\times 5^1\times {\mathrm{528401}}^1$

素因数の和:528412

約数の個数: 16

約数和(自身を含む): 47556180

約数和(自身を除く): 26420140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 528401, 1056802, 2113604, 2642005, 4227208, 5284010, 10568020, 21136040]

約数ペア:

[(1, 21136040), (2, 10568020), (4, 5284010), (5, 4227208), (8, 2642005), (10, 2113604), (20, 1056802), (40, 528401)]