21225617

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{151}}^1\times {\mathrm{467}}^1$

素因数の和:668

約数の個数: 16

約数和(自身を含む): 25039872

約数和(自身を除く): 3814255

約数列:

[1, 7, 43, 151, 301, 467, 1057, 3269, 6493, 20081, 45451, 70517, 140567, 493619, 3032231, 21225617]

約数ペア:

[(1, 21225617), (7, 3032231), (43, 493619), (151, 140567), (301, 70517), (467, 45451), (1057, 20081), (3269, 6493)]