18195020

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{21157}}^1$

素因数の和:21209

約数の個数: 24

約数和(自身を含む): 39099984

約数和(自身を除く): 20904964

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 21157, 42314, 84628, 105785, 211570, 423140, 909751, 1819502, 3639004, 4548755, 9097510, 18195020]

約数ペア:

[(1, 18195020), (2, 9097510), (4, 4548755), (5, 3639004), (10, 1819502), (20, 909751), (43, 423140), (86, 211570), (172, 105785), (215, 84628), (430, 42314), (860, 21157)]