20881828

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{193}}^1\times {\mathrm{2459}}^1$

素因数の和:2667

約数の個数: 24

約数和(自身を含む): 40088160

約数和(自身を除く): 19206332

約数列:

[1, 2, 4, 11, 22, 44, 193, 386, 772, 2123, 2459, 4246, 4918, 8492, 9836, 27049, 54098, 108196, 474587, 949174, 1898348, 5220457, 10440914, 20881828]

約数ペア:

[(1, 20881828), (2, 10440914), (4, 5220457), (11, 1898348), (22, 949174), (44, 474587), (193, 108196), (386, 54098), (772, 27049), (2123, 9836), (2459, 8492), (4246, 4918)]