21208054

素因数分解:

$2^1\times 7^1\times {\mathrm{701}}^1\times {\mathrm{2161}}^1$

素因数の和:2871

約数の個数: 16

約数和(自身を含む): 36425376

約数和(自身を除く): 15217322

約数列:

[1, 2, 7, 14, 701, 1402, 2161, 4322, 4907, 9814, 15127, 30254, 1514861, 3029722, 10604027, 21208054]

約数ペア:

[(1, 21208054), (2, 10604027), (7, 3029722), (14, 1514861), (701, 30254), (1402, 15127), (2161, 9814), (4322, 4907)]