19871117

素因数分解:

$7^2\times {\mathrm{43}}^1\times {\mathrm{9431}}^1$

素因数の和:9488

約数の個数: 12

約数和(自身を含む): 23655456

約数和(自身を除く): 3784339

約数列:

[1, 7, 43, 49, 301, 2107, 9431, 66017, 405533, 462119, 2838731, 19871117]

約数ペア:

[(1, 19871117), (7, 2838731), (43, 462119), (49, 405533), (301, 66017), (2107, 9431)]