20512542280

素因数分解:

$2^3\times 5^1\times {\mathrm{512813557}}^1$

素因数の和:512813568

約数の個数: 16

約数和(自身を含む): 46153220220

約数和(自身を除く): 25640677940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 512813557, 1025627114, 2051254228, 2564067785, 4102508456, 5128135570, 10256271140, 20512542280]

約数ペア:

[(1, 20512542280), (2, 10256271140), (4, 5128135570), (5, 4102508456), (8, 2564067785), (10, 2051254228), (20, 1025627114), (40, 512813557)]