20620390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{271}}^1\times {\mathrm{1087}}^1$

素因数の和:1372

約数の個数: 32

約数和(自身を含む): 42614784

約数和(自身を除く): 21994394

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 271, 542, 1087, 1355, 1897, 2174, 2710, 3794, 5435, 7609, 9485, 10870, 15218, 18970, 38045, 76090, 294577, 589154, 1472885, 2062039, 2945770, 4124078, 10310195, 20620390]

約数ペア:

[(1, 20620390), (2, 10310195), (5, 4124078), (7, 2945770), (10, 2062039), (14, 1472885), (35, 589154), (70, 294577), (271, 76090), (542, 38045), (1087, 18970), (1355, 15218), (1897, 10870), (2174, 9485), (2710, 7609), (3794, 5435)]