20760640

素因数分解:

$2^6\times 5^1\times {\mathrm{64877}}^1$

素因数の和:64894

約数の個数: 28

約数和(自身を含む): 49437036

約数和(自身を除く): 28676396

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 64877, 129754, 259508, 324385, 519016, 648770, 1038032, 1297540, 2076064, 2595080, 4152128, 5190160, 10380320, 20760640]

約数ペア:

[(1, 20760640), (2, 10380320), (4, 5190160), (5, 4152128), (8, 2595080), (10, 2076064), (16, 1297540), (20, 1038032), (32, 648770), (40, 519016), (64, 324385), (80, 259508), (160, 129754), (320, 64877)]