870020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1061}}^1$

素因数の和:1111

約数の個数: 24

約数和(自身を含む): 1873368

約数和(自身を除く): 1003348

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 1061, 2122, 4244, 5305, 10610, 21220, 43501, 87002, 174004, 217505, 435010, 870020]

約数ペア:

[(1, 870020), (2, 435010), (4, 217505), (5, 174004), (10, 87002), (20, 43501), (41, 21220), (82, 10610), (164, 5305), (205, 4244), (410, 2122), (820, 1061)]