20862218884

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{557}}^1\times {\mathrm{720281}}^1$

素因数の和:720855

約数の個数: 24

約数和(自身を含む): 39387900888

約数和(自身を除く): 18525682004

約数列:

[1, 2, 4, 13, 26, 52, 557, 1114, 2228, 7241, 14482, 28964, 720281, 1440562, 2881124, 9363653, 18727306, 37454612, 401196517, 802393034, 1604786068, 5215554721, 10431109442, 20862218884]

約数ペア:

[(1, 20862218884), (2, 10431109442), (4, 5215554721), (13, 1604786068), (26, 802393034), (52, 401196517), (557, 37454612), (1114, 18727306), (2228, 9363653), (7241, 2881124), (14482, 1440562), (28964, 720281)]