20787866

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{7213}}^1$

素因数の和:7357

約数の個数: 16

約数和(自身を含む): 34280928

約数和(自身を除く): 13493062

約数列:

[1, 2, 11, 22, 131, 262, 1441, 2882, 7213, 14426, 79343, 158686, 944903, 1889806, 10393933, 20787866]

約数ペア:

[(1, 20787866), (2, 10393933), (11, 1889806), (22, 944903), (131, 158686), (262, 79343), (1441, 14426), (2882, 7213)]