21139924

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{5569}}^1$

素因数の和:5659

約数の個数: 24

約数和(自身を含む): 40393640

約数和(自身を除く): 19253716

約数列:

[1, 2, 4, 13, 26, 52, 73, 146, 292, 949, 1898, 3796, 5569, 11138, 22276, 72397, 144794, 289588, 406537, 813074, 1626148, 5284981, 10569962, 21139924]

約数ペア:

[(1, 21139924), (2, 10569962), (4, 5284981), (13, 1626148), (26, 813074), (52, 406537), (73, 289588), (146, 144794), (292, 72397), (949, 22276), (1898, 11138), (3796, 5569)]