21905080

素因数分解:

$2^3\times 5^1\times {\mathrm{547627}}^1$

素因数の和:547638

約数の個数: 16

約数和(自身を含む): 49286520

約数和(自身を除く): 27381440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 547627, 1095254, 2190508, 2738135, 4381016, 5476270, 10952540, 21905080]

約数ペア:

[(1, 21905080), (2, 10952540), (4, 5476270), (5, 4381016), (8, 2738135), (10, 2190508), (20, 1095254), (40, 547627)]