18117620

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{21067}}^1$

素因数の和:21119

約数の個数: 24

約数和(自身を含む): 38933664

約数和(自身を除く): 20816044

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 21067, 42134, 84268, 105335, 210670, 421340, 905881, 1811762, 3623524, 4529405, 9058810, 18117620]

約数ペア:

[(1, 18117620), (2, 9058810), (4, 4529405), (5, 3623524), (10, 1811762), (20, 905881), (43, 421340), (86, 210670), (172, 105335), (215, 84268), (430, 42134), (860, 21067)]