18272420

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{21247}}^1$

素因数の和:21299

約数の個数: 24

約数和(自身を含む): 39266304

約数和(自身を除く): 20993884

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 21247, 42494, 84988, 106235, 212470, 424940, 913621, 1827242, 3654484, 4568105, 9136210, 18272420]

約数ペア:

[(1, 18272420), (2, 9136210), (4, 4568105), (5, 3654484), (10, 1827242), (20, 913621), (43, 424940), (86, 212470), (172, 106235), (215, 84988), (430, 42494), (860, 21247)]