20812280

素因数分解:

$2^3\times 5^1\times {\mathrm{520307}}^1$

素因数の和:520318

約数の個数: 16

約数和(自身を含む): 46827720

約数和(自身を除く): 26015440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 520307, 1040614, 2081228, 2601535, 4162456, 5203070, 10406140, 20812280]

約数ペア:

[(1, 20812280), (2, 10406140), (4, 5203070), (5, 4162456), (8, 2601535), (10, 2081228), (20, 1040614), (40, 520307)]