20578340

素因数分解:

$2^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{5387}}^1$

素因数の和:5587

約数の個数: 24

約数和(自身を含む): 43448832

約数和(自身を除く): 22870492

約数列:

[1, 2, 4, 5, 10, 20, 191, 382, 764, 955, 1910, 3820, 5387, 10774, 21548, 26935, 53870, 107740, 1028917, 2057834, 4115668, 5144585, 10289170, 20578340]

約数ペア:

[(1, 20578340), (2, 10289170), (4, 5144585), (5, 4115668), (10, 2057834), (20, 1028917), (191, 107740), (382, 53870), (764, 26935), (955, 21548), (1910, 10774), (3820, 5387)]