21238049

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{317}}^1\times {\mathrm{563}}^1$

素因数の和:904

約数の個数: 16

約数和(自身を含む): 25826688

約数和(自身を除く): 4588639

約数列:

[1, 7, 17, 119, 317, 563, 2219, 3941, 5389, 9571, 37723, 66997, 178471, 1249297, 3034007, 21238049]

約数ペア:

[(1, 21238049), (7, 3034007), (17, 1249297), (119, 178471), (317, 66997), (563, 37723), (2219, 9571), (3941, 5389)]