21781159004

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{495026341}}^1$

素因数の和:495026356

約数の個数: 12

約数和(自身を含む): 41582212728

約数和(自身を除く): 19801053724

約数列:

[1, 2, 4, 11, 22, 44, 495026341, 990052682, 1980105364, 5445289751, 10890579502, 21781159004]

約数ペア:

[(1, 21781159004), (2, 10890579502), (4, 5445289751), (11, 1980105364), (22, 990052682), (44, 495026341)]