20447720

素因数分解:

$2^3\times 5^1\times {\mathrm{511193}}^1$

素因数の和:511204

約数の個数: 16

約数和(自身を含む): 46007460

約数和(自身を除く): 25559740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 511193, 1022386, 2044772, 2555965, 4089544, 5111930, 10223860, 20447720]

約数ペア:

[(1, 20447720), (2, 10223860), (4, 5111930), (5, 4089544), (8, 2555965), (10, 2044772), (20, 1022386), (40, 511193)]