2019966680

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1231687}}^1$

素因数の和:1231739

約数の個数: 32

約数和(自身を含む): 4655780640

約数和(自身を除く): 2635813960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 1231687, 2463374, 4926748, 6158435, 9853496, 12316870, 24633740, 49267480, 50499167, 100998334, 201996668, 252495835, 403993336, 504991670, 1009983340, 2019966680]

約数ペア:

[(1, 2019966680), (2, 1009983340), (4, 504991670), (5, 403993336), (8, 252495835), (10, 201996668), (20, 100998334), (40, 50499167), (41, 49267480), (82, 24633740), (164, 12316870), (205, 9853496), (328, 6158435), (410, 4926748), (820, 2463374), (1640, 1231687)]