18396260

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{21391}}^1$

素因数の和:21443

約数の個数: 24

約数和(自身を含む): 39532416

約数和(自身を除く): 21136156

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 21391, 42782, 85564, 106955, 213910, 427820, 919813, 1839626, 3679252, 4599065, 9198130, 18396260]

約数ペア:

[(1, 18396260), (2, 9198130), (4, 4599065), (5, 3679252), (10, 1839626), (20, 919813), (43, 427820), (86, 213910), (172, 106955), (215, 85564), (430, 42782), (860, 21391)]