17808020

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{20707}}^1$

素因数の和:20759

約数の個数: 24

約数和(自身を含む): 38268384

約数和(自身を除く): 20460364

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 20707, 41414, 82828, 103535, 207070, 414140, 890401, 1780802, 3561604, 4452005, 8904010, 17808020]

約数ペア:

[(1, 17808020), (2, 8904010), (4, 4452005), (5, 3561604), (10, 1780802), (20, 890401), (43, 414140), (86, 207070), (172, 103535), (215, 82828), (430, 41414), (860, 20707)]