1821220

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2221}}^1$

素因数の和:2271

約数の個数: 24

約数和(自身を含む): 3919608

約数和(自身を除く): 2098388

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 2221, 4442, 8884, 11105, 22210, 44420, 91061, 182122, 364244, 455305, 910610, 1821220]

約数ペア:

[(1, 1821220), (2, 910610), (4, 455305), (5, 364244), (10, 182122), (20, 91061), (41, 44420), (82, 22210), (164, 11105), (205, 8884), (410, 4442), (820, 2221)]