21240170

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{303431}}^1$

素因数の和:303445

約数の個数: 16

約数和(自身を含む): 43694208

約数和(自身を除く): 22454038

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 303431, 606862, 1517155, 2124017, 3034310, 4248034, 10620085, 21240170]

約数ペア:

[(1, 21240170), (2, 10620085), (5, 4248034), (7, 3034310), (10, 2124017), (14, 1517155), (35, 606862), (70, 303431)]