21125820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{352097}}^1$

素因数の和:352109

約数の個数: 24

約数和(自身を含む): 59152464

約数和(自身を除く): 38026644

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 352097, 704194, 1056291, 1408388, 1760485, 2112582, 3520970, 4225164, 5281455, 7041940, 10562910, 21125820]

約数ペア:

[(1, 21125820), (2, 10562910), (3, 7041940), (4, 5281455), (5, 4225164), (6, 3520970), (10, 2112582), (12, 1760485), (15, 1408388), (20, 1056291), (30, 704194), (60, 352097)]