20805216464

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{31715269}}^1$

素因数の和:31715318

約数の個数: 20

約数和(自身を含む): 41293281540

約数和(自身を除く): 20488065076

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 31715269, 63430538, 126861076, 253722152, 507444304, 1300326029, 2600652058, 5201304116, 10402608232, 20805216464]

約数ペア:

[(1, 20805216464), (2, 10402608232), (4, 5201304116), (8, 2600652058), (16, 1300326029), (41, 507444304), (82, 253722152), (164, 126861076), (328, 63430538), (656, 31715269)]