19581340

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{22769}}^1$

素因数の和:22821

約数の個数: 24

約数和(自身を含む): 42078960

約数和(自身を除く): 22497620

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 22769, 45538, 91076, 113845, 227690, 455380, 979067, 1958134, 3916268, 4895335, 9790670, 19581340]

約数ペア:

[(1, 19581340), (2, 9790670), (4, 4895335), (5, 3916268), (10, 1958134), (20, 979067), (43, 455380), (86, 227690), (172, 113845), (215, 91076), (430, 45538), (860, 22769)]