20107540

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{21391}}^1$

素因数の和:21447

約数の個数: 24

約数和(自身を含む): 43126272

約数和(自身を除く): 23018732

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 21391, 42782, 85564, 106955, 213910, 427820, 1005377, 2010754, 4021508, 5026885, 10053770, 20107540]

約数ペア:

[(1, 20107540), (2, 10053770), (4, 5026885), (5, 4021508), (10, 2010754), (20, 1005377), (47, 427820), (94, 213910), (188, 106955), (235, 85564), (470, 42782), (940, 21391)]