20208820

素因数分解:

$2^2\times 5^1\times {\mathrm{809}}^1\times {\mathrm{1249}}^1$

素因数の和:2067

約数の個数: 24

約数和(自身を含む): 42525000

約数和(自身を除く): 22316180

約数列:

[1, 2, 4, 5, 10, 20, 809, 1249, 1618, 2498, 3236, 4045, 4996, 6245, 8090, 12490, 16180, 24980, 1010441, 2020882, 4041764, 5052205, 10104410, 20208820]

約数ペア:

[(1, 20208820), (2, 10104410), (4, 5052205), (5, 4041764), (10, 2020882), (20, 1010441), (809, 24980), (1249, 16180), (1618, 12490), (2498, 8090), (3236, 6245), (4045, 4996)]