20781684004

素因数分解:

$2^2\times {\mathrm{113}}^1\times {\mathrm{661}}^1\times {\mathrm{69557}}^1$

素因数の和:70335

約数の個数: 24

約数和(自身を含む): 36745822008

約数和(自身を除く): 15964138004

約数列:

[1, 2, 4, 113, 226, 452, 661, 1322, 2644, 69557, 74693, 139114, 149386, 278228, 298772, 7859941, 15719882, 31439764, 45977177, 91954354, 183908708, 5195421001, 10390842002, 20781684004]

約数ペア:

[(1, 20781684004), (2, 10390842002), (4, 5195421001), (113, 183908708), (226, 91954354), (452, 45977177), (661, 31439764), (1322, 15719882), (2644, 7859941), (69557, 298772), (74693, 278228), (139114, 149386)]