21813020

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{10193}}^1$

素因数の和:10309

約数の個数: 24

約数和(自身を含む): 46239984

約数和(自身を除く): 24426964

約数列:

[1, 2, 4, 5, 10, 20, 107, 214, 428, 535, 1070, 2140, 10193, 20386, 40772, 50965, 101930, 203860, 1090651, 2181302, 4362604, 5453255, 10906510, 21813020]

約数ペア:

[(1, 21813020), (2, 10906510), (4, 5453255), (5, 4362604), (10, 2181302), (20, 1090651), (107, 203860), (214, 101930), (428, 50965), (535, 40772), (1070, 20386), (2140, 10193)]