18504620

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{21517}}^1$

素因数の和:21569

約数の個数: 24

約数和(自身を含む): 39765264

約数和(自身を除く): 21260644

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 21517, 43034, 86068, 107585, 215170, 430340, 925231, 1850462, 3700924, 4626155, 9252310, 18504620]

約数ペア:

[(1, 18504620), (2, 9252310), (4, 4626155), (5, 3700924), (10, 1850462), (20, 925231), (43, 430340), (86, 215170), (172, 107585), (215, 86068), (430, 43034), (860, 21517)]