21720644

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{263}}^1\times {\mathrm{1877}}^1$

素因数の和:2155

約数の個数: 24

約数和(自身を含む): 41646528

約数和(自身を除く): 19925884

約数列:

[1, 2, 4, 11, 22, 44, 263, 526, 1052, 1877, 2893, 3754, 5786, 7508, 11572, 20647, 41294, 82588, 493651, 987302, 1974604, 5430161, 10860322, 21720644]

約数ペア:

[(1, 21720644), (2, 10860322), (4, 5430161), (11, 1974604), (22, 987302), (44, 493651), (263, 82588), (526, 41294), (1052, 20647), (1877, 11572), (2893, 7508), (3754, 5786)]