20994640

素因数分解:

$2^4\times 5^1\times {\mathrm{262433}}^1$

素因数の和:262446

約数の個数: 20

約数和(自身を含む): 48812724

約数和(自身を除く): 27818084

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 262433, 524866, 1049732, 1312165, 2099464, 2624330, 4198928, 5248660, 10497320, 20994640]

約数ペア:

[(1, 20994640), (2, 10497320), (4, 5248660), (5, 4198928), (8, 2624330), (10, 2099464), (16, 1312165), (20, 1049732), (40, 524866), (80, 262433)]