20568280

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{2437}}^1$

素因数の和:2659

約数の個数: 32

約数和(自身を含む): 46517040

約数和(自身を除く): 25948760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 2437, 4220, 4874, 8440, 9748, 12185, 19496, 24370, 48740, 97480, 514207, 1028414, 2056828, 2571035, 4113656, 5142070, 10284140, 20568280]

約数ペア:

[(1, 20568280), (2, 10284140), (4, 5142070), (5, 4113656), (8, 2571035), (10, 2056828), (20, 1028414), (40, 514207), (211, 97480), (422, 48740), (844, 24370), (1055, 19496), (1688, 12185), (2110, 9748), (2437, 8440), (4220, 4874)]