20740864

素因数分解:

$2^8\times {\mathrm{81019}}^1$

素因数の和:81035

約数の個数: 18

約数和(自身を含む): 41401220

約数和(自身を除く): 20660356

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 81019, 162038, 324076, 648152, 1296304, 2592608, 5185216, 10370432, 20740864]

約数ペア:

[(1, 20740864), (2, 10370432), (4, 5185216), (8, 2592608), (16, 1296304), (32, 648152), (64, 324076), (128, 162038), (256, 81019)]