20219885

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{1999}}^1$

素因数の和:2045

約数の個数: 24

約数和(自身を含む): 29472000

約数和(自身を除く): 9252115

約数列:

[1, 5, 7, 17, 35, 85, 119, 289, 595, 1445, 1999, 2023, 9995, 10115, 13993, 33983, 69965, 169915, 237881, 577711, 1189405, 2888555, 4043977, 20219885]

約数ペア:

[(1, 20219885), (5, 4043977), (7, 2888555), (17, 1189405), (35, 577711), (85, 237881), (119, 169915), (289, 69965), (595, 33983), (1445, 13993), (1999, 10115), (2023, 9995)]