20528660

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{21839}}^1$

素因数の和:21895

約数の個数: 24

約数和(自身を含む): 44029440

約数和(自身を除く): 23500780

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 21839, 43678, 87356, 109195, 218390, 436780, 1026433, 2052866, 4105732, 5132165, 10264330, 20528660]

約数ペア:

[(1, 20528660), (2, 10264330), (4, 5132165), (5, 4105732), (10, 2052866), (20, 1026433), (47, 436780), (94, 218390), (188, 109195), (235, 87356), (470, 43678), (940, 21839)]