20407540

素因数分解:

$2^2\times 5^1\times {\mathrm{571}}^1\times {\mathrm{1787}}^1$

素因数の和:2367

約数の個数: 24

約数和(自身を含む): 42954912

約数和(自身を除く): 22547372

約数列:

[1, 2, 4, 5, 10, 20, 571, 1142, 1787, 2284, 2855, 3574, 5710, 7148, 8935, 11420, 17870, 35740, 1020377, 2040754, 4081508, 5101885, 10203770, 20407540]

約数ペア:

[(1, 20407540), (2, 10203770), (4, 5101885), (5, 4081508), (10, 2040754), (20, 1020377), (571, 35740), (1142, 17870), (1787, 11420), (2284, 8935), (2855, 7148), (3574, 5710)]