20751740

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{25307}}^1$

素因数の和:25357

約数の個数: 24

約数和(自身を含む): 44643312

約数和(自身を除く): 23891572

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 25307, 50614, 101228, 126535, 253070, 506140, 1037587, 2075174, 4150348, 5187935, 10375870, 20751740]

約数ペア:

[(1, 20751740), (2, 10375870), (4, 5187935), (5, 4150348), (10, 2075174), (20, 1037587), (41, 506140), (82, 253070), (164, 126535), (205, 101228), (410, 50614), (820, 25307)]