20806280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47287}}^1$

素因数の和:47309

約数の個数: 32

約数和(自身を含む): 51071040

約数和(自身を除く): 30264760

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 47287, 94574, 189148, 236435, 378296, 472870, 520157, 945740, 1040314, 1891480, 2080628, 2600785, 4161256, 5201570, 10403140, 20806280]

約数ペア:

[(1, 20806280), (2, 10403140), (4, 5201570), (5, 4161256), (8, 2600785), (10, 2080628), (11, 1891480), (20, 1040314), (22, 945740), (40, 520157), (44, 472870), (55, 378296), (88, 236435), (110, 189148), (220, 94574), (440, 47287)]