20467640

素因数分解:

$2^3\times 5^1\times {\mathrm{511691}}^1$

素因数の和:511702

約数の個数: 16

約数和(自身を含む): 46052280

約数和(自身を除く): 25584640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 511691, 1023382, 2046764, 2558455, 4093528, 5116910, 10233820, 20467640]

約数ペア:

[(1, 20467640), (2, 10233820), (4, 5116910), (5, 4093528), (8, 2558455), (10, 2046764), (20, 1023382), (40, 511691)]