20144390

素因数分解:

$2^1\times 5^1\times 7^4\times {\mathrm{839}}^1$

素因数の和:874

約数の個数: 40

約数和(自身を含む): 42351120

約数和(自身を除く): 22206730

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 343, 490, 686, 839, 1678, 1715, 2401, 3430, 4195, 4802, 5873, 8390, 11746, 12005, 24010, 29365, 41111, 58730, 82222, 205555, 287777, 411110, 575554, 1438885, 2014439, 2877770, 4028878, 10072195, 20144390]

約数ペア:

[(1, 20144390), (2, 10072195), (5, 4028878), (7, 2877770), (10, 2014439), (14, 1438885), (35, 575554), (49, 411110), (70, 287777), (98, 205555), (245, 82222), (343, 58730), (490, 41111), (686, 29365), (839, 24010), (1678, 12005), (1715, 11746), (2401, 8390), (3430, 5873), (4195, 4802)]