20518928

素因数分解:

$2^4\times {\mathrm{83}}^1\times {\mathrm{15451}}^1$

素因数の和:15542

約数の個数: 20

約数和(自身を含む): 40237008

約数和(自身を除く): 19718080

約数列:

[1, 2, 4, 8, 16, 83, 166, 332, 664, 1328, 15451, 30902, 61804, 123608, 247216, 1282433, 2564866, 5129732, 10259464, 20518928]

約数ペア:

[(1, 20518928), (2, 10259464), (4, 5129732), (8, 2564866), (16, 1282433), (83, 247216), (166, 123608), (332, 61804), (664, 30902), (1328, 15451)]