21251073

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{257}}^1\times {\mathrm{641}}^1$

素因数の和:944

約数の個数: 16

約数和(自身を含む): 29151936

約数和(自身を除く): 7900863

約数列:

[1, 3, 43, 129, 257, 641, 771, 1923, 11051, 27563, 33153, 82689, 164737, 494211, 7083691, 21251073]

約数ペア:

[(1, 21251073), (3, 7083691), (43, 494211), (129, 164737), (257, 82689), (641, 33153), (771, 27563), (1923, 11051)]