8520020

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{9907}}^1$

素因数の和:9959

約数の個数: 24

約数和(自身を含む): 18309984

約数和(自身を除く): 9789964

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 9907, 19814, 39628, 49535, 99070, 198140, 426001, 852002, 1704004, 2130005, 4260010, 8520020]

約数ペア:

[(1, 8520020), (2, 4260010), (4, 2130005), (5, 1704004), (10, 852002), (20, 426001), (43, 198140), (86, 99070), (172, 49535), (215, 39628), (430, 19814), (860, 9907)]