21171549

素因数分解:

$3^1\times 7^1\times {\mathrm{691}}^1\times {\mathrm{1459}}^1$

素因数の和:2160

約数の個数: 16

約数和(自身を含む): 32330240

約数和(自身を除く): 11158691

約数列:

[1, 3, 7, 21, 691, 1459, 2073, 4377, 4837, 10213, 14511, 30639, 1008169, 3024507, 7057183, 21171549]

約数ペア:

[(1, 21171549), (3, 7057183), (7, 3024507), (21, 1008169), (691, 30639), (1459, 14511), (2073, 10213), (4377, 4837)]