21190040

素因数分解:

$2^3\times 5^1\times {\mathrm{529751}}^1$

素因数の和:529762

約数の個数: 16

約数和(自身を含む): 47677680

約数和(自身を除く): 26487640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 529751, 1059502, 2119004, 2648755, 4238008, 5297510, 10595020, 21190040]

約数ペア:

[(1, 21190040), (2, 10595020), (4, 5297510), (5, 4238008), (8, 2648755), (10, 2119004), (20, 1059502), (40, 529751)]