12990257

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{419}}^1$

素因数の和:572

約数の個数: 16

約数和(自身を含む): 15375360

約数和(自身を除く): 2385103

約数列:

[1, 7, 43, 103, 301, 419, 721, 2933, 4429, 18017, 31003, 43157, 126119, 302099, 1855751, 12990257]

約数ペア:

[(1, 12990257), (7, 1855751), (43, 302099), (103, 126119), (301, 43157), (419, 31003), (721, 18017), (2933, 4429)]