20427580

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{23753}}^1$

素因数の和:23805

約数の個数: 24

約数和(自身を含む): 43897392

約数和(自身を除く): 23469812

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 23753, 47506, 95012, 118765, 237530, 475060, 1021379, 2042758, 4085516, 5106895, 10213790, 20427580]

約数ペア:

[(1, 20427580), (2, 10213790), (4, 5106895), (5, 4085516), (10, 2042758), (20, 1021379), (43, 475060), (86, 237530), (172, 118765), (215, 95012), (430, 47506), (860, 23753)]