20858780

素因数分解:

$2^2\times 5^1\times {\mathrm{709}}^1\times {\mathrm{1471}}^1$

素因数の和:2189

約数の個数: 24

約数和(自身を含む): 43895040

約数和(自身を除く): 23036260

約数列:

[1, 2, 4, 5, 10, 20, 709, 1418, 1471, 2836, 2942, 3545, 5884, 7090, 7355, 14180, 14710, 29420, 1042939, 2085878, 4171756, 5214695, 10429390, 20858780]

約数ペア:

[(1, 20858780), (2, 10429390), (4, 5214695), (5, 4171756), (10, 2085878), (20, 1042939), (709, 29420), (1418, 14710), (1471, 14180), (2836, 7355), (2942, 7090), (3545, 5884)]