858704180

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{393901}}^1$

素因数の和:394019

約数の個数: 24

約数和(自身を含む): 1819827240

約数和(自身を除く): 961123060

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 393901, 787802, 1575604, 1969505, 3939010, 7878020, 42935209, 85870418, 171740836, 214676045, 429352090, 858704180]

約数ペア:

[(1, 858704180), (2, 429352090), (4, 214676045), (5, 171740836), (10, 85870418), (20, 42935209), (109, 7878020), (218, 3939010), (436, 1969505), (545, 1575604), (1090, 787802), (2180, 393901)]