20809481

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{2063}}^1$

素因数の和:2212

約数の個数: 16

約数和(自身を含む): 26155008

約数和(自身を除く): 5345527

約数列:

[1, 7, 11, 77, 131, 917, 1441, 2063, 10087, 14441, 22693, 158851, 270253, 1891771, 2972783, 20809481]

約数ペア:

[(1, 20809481), (7, 2972783), (11, 1891771), (77, 270253), (131, 158851), (917, 22693), (1441, 14441), (2063, 10087)]