18152020

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{21107}}^1$

素因数の和:21159

約数の個数: 24

約数和(自身を含む): 39007584

約数和(自身を除く): 20855564

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 21107, 42214, 84428, 105535, 211070, 422140, 907601, 1815202, 3630404, 4538005, 9076010, 18152020]

約数ペア:

[(1, 18152020), (2, 9076010), (4, 4538005), (5, 3630404), (10, 1815202), (20, 907601), (43, 422140), (86, 211070), (172, 105535), (215, 84428), (430, 42214), (860, 21107)]