21139670

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{124351}}^1$

素因数の和:124375

約数の個数: 16

約数和(自身を含む): 40290048

約数和(自身を除く): 19150378

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 124351, 248702, 621755, 1243510, 2113967, 4227934, 10569835, 21139670]

約数ペア:

[(1, 21139670), (2, 10569835), (5, 4227934), (10, 2113967), (17, 1243510), (34, 621755), (85, 248702), (170, 124351)]