8640784

素因数分解:

$2^4\times {\mathrm{509}}^1\times {\mathrm{1061}}^1$

素因数の和:1578

約数の個数: 20

約数和(自身を含む): 16790220

約数和(自身を除く): 8149436

約数列:

[1, 2, 4, 8, 16, 509, 1018, 1061, 2036, 2122, 4072, 4244, 8144, 8488, 16976, 540049, 1080098, 2160196, 4320392, 8640784]

約数ペア:

[(1, 8640784), (2, 4320392), (4, 2160196), (8, 1080098), (16, 540049), (509, 16976), (1018, 8488), (1061, 8144), (2036, 4244), (2122, 4072)]