20118680

素因数分解:

$2^3\times 5^1\times {\mathrm{241}}^1\times {\mathrm{2087}}^1$

素因数の和:2339

約数の個数: 32

約数和(自身を含む): 45476640

約数和(自身を除く): 25357960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 241, 482, 964, 1205, 1928, 2087, 2410, 4174, 4820, 8348, 9640, 10435, 16696, 20870, 41740, 83480, 502967, 1005934, 2011868, 2514835, 4023736, 5029670, 10059340, 20118680]

約数ペア:

[(1, 20118680), (2, 10059340), (4, 5029670), (5, 4023736), (8, 2514835), (10, 2011868), (20, 1005934), (40, 502967), (241, 83480), (482, 41740), (964, 20870), (1205, 16696), (1928, 10435), (2087, 9640), (2410, 8348), (4174, 4820)]