20879660

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{25463}}^1$

素因数の和:25513

約数の個数: 24

約数和(自身を含む): 44918496

約数和(自身を除く): 24038836

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 25463, 50926, 101852, 127315, 254630, 509260, 1043983, 2087966, 4175932, 5219915, 10439830, 20879660]

約数ペア:

[(1, 20879660), (2, 10439830), (4, 5219915), (5, 4175932), (10, 2087966), (20, 1043983), (41, 509260), (82, 254630), (164, 127315), (205, 101852), (410, 50926), (820, 25463)]