21672868

素因数分解:

$2^2\times 7^1\times {\mathrm{661}}^1\times {\mathrm{1171}}^1$

素因数の和:1843

約数の個数: 24

約数和(自身を含む): 43448384

約数和(自身を除く): 21775516

約数列:

[1, 2, 4, 7, 14, 28, 661, 1171, 1322, 2342, 2644, 4627, 4684, 8197, 9254, 16394, 18508, 32788, 774031, 1548062, 3096124, 5418217, 10836434, 21672868]

約数ペア:

[(1, 21672868), (2, 10836434), (4, 5418217), (7, 3096124), (14, 1548062), (28, 774031), (661, 32788), (1171, 18508), (1322, 16394), (2342, 9254), (2644, 8197), (4627, 4684)]