28421140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{129187}}^1$

素因数の和:129207

約数の個数: 24

約数和(自身を含む): 65110752

約数和(自身を除く): 36689612

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 129187, 258374, 516748, 645935, 1291870, 1421057, 2583740, 2842114, 5684228, 7105285, 14210570, 28421140]

約数ペア:

[(1, 28421140), (2, 14210570), (4, 7105285), (5, 5684228), (10, 2842114), (11, 2583740), (20, 1421057), (22, 1291870), (44, 645935), (55, 516748), (110, 258374), (220, 129187)]