20320940

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{23629}}^1$

素因数の和:23681

約数の個数: 24

約数和(自身を含む): 43668240

約数和(自身を除く): 23347300

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 23629, 47258, 94516, 118145, 236290, 472580, 1016047, 2032094, 4064188, 5080235, 10160470, 20320940]

約数ペア:

[(1, 20320940), (2, 10160470), (4, 5080235), (5, 4064188), (10, 2032094), (20, 1016047), (43, 472580), (86, 236290), (172, 118145), (215, 94516), (430, 47258), (860, 23629)]