165261520

素因数分解:

$2^4\times 5^1\times {\mathrm{2065769}}^1$

素因数の和:2065782

約数の個数: 20

約数和(自身を含む): 384233220

約数和(自身を除く): 218971700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2065769, 4131538, 8263076, 10328845, 16526152, 20657690, 33052304, 41315380, 82630760, 165261520]

約数ペア:

[(1, 165261520), (2, 82630760), (4, 41315380), (5, 33052304), (8, 20657690), (10, 16526152), (16, 10328845), (20, 8263076), (40, 4131538), (80, 2065769)]