20806820

素因数分解:

$2^2\times 5^1\times {\mathrm{227}}^1\times {\mathrm{4583}}^1$

素因数の和:4819

約数の個数: 24

約数和(自身を含む): 43896384

約数和(自身を除く): 23089564

約数列:

[1, 2, 4, 5, 10, 20, 227, 454, 908, 1135, 2270, 4540, 4583, 9166, 18332, 22915, 45830, 91660, 1040341, 2080682, 4161364, 5201705, 10403410, 20806820]

約数ペア:

[(1, 20806820), (2, 10403410), (4, 5201705), (5, 4161364), (10, 2080682), (20, 1040341), (227, 91660), (454, 45830), (908, 22915), (1135, 18332), (2270, 9166), (4540, 4583)]