20356040

素因数分解:

$2^3\times 5^1\times {\mathrm{508901}}^1$

素因数の和:508912

約数の個数: 16

約数和(自身を含む): 45801180

約数和(自身を除く): 25445140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 508901, 1017802, 2035604, 2544505, 4071208, 5089010, 10178020, 20356040]

約数ペア:

[(1, 20356040), (2, 10178020), (4, 5089010), (5, 4071208), (8, 2544505), (10, 2035604), (20, 1017802), (40, 508901)]