21538829

素因数分解:

${\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{727}}^1$

素因数の和:836

約数の個数: 16

約数和(自身を含む): 24216192

約数和(自身を除く): 2677363

約数列:

[1, 13, 43, 53, 559, 689, 727, 2279, 9451, 29627, 31261, 38531, 406393, 500903, 1656833, 21538829]

約数ペア:

[(1, 21538829), (13, 1656833), (43, 500903), (53, 406393), (559, 38531), (689, 31261), (727, 29627), (2279, 9451)]