20559640

素因数分解:

$2^3\times 5^1\times {\mathrm{513991}}^1$

素因数の和:514002

約数の個数: 16

約数和(自身を含む): 46259280

約数和(自身を除く): 25699640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 513991, 1027982, 2055964, 2569955, 4111928, 5139910, 10279820, 20559640]

約数ペア:

[(1, 20559640), (2, 10279820), (4, 5139910), (5, 4111928), (8, 2569955), (10, 2055964), (20, 1027982), (40, 513991)]