21321212

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{2801}}^1$

素因数の和:2989

約数の個数: 24

約数和(自身を含む): 40954032

約数和(自身を除く): 19632820

約数列:

[1, 2, 4, 11, 22, 44, 173, 346, 692, 1903, 2801, 3806, 5602, 7612, 11204, 30811, 61622, 123244, 484573, 969146, 1938292, 5330303, 10660606, 21321212]

約数ペア:

[(1, 21321212), (2, 10660606), (4, 5330303), (11, 1938292), (22, 969146), (44, 484573), (173, 123244), (346, 61622), (692, 30811), (1903, 11204), (2801, 7612), (3806, 5602)]