12390020

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{14407}}^1$

素因数の和:14459

約数の個数: 24

約数和(自身を含む): 26625984

約数和(自身を除く): 14235964

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 14407, 28814, 57628, 72035, 144070, 288140, 619501, 1239002, 2478004, 3097505, 6195010, 12390020]

約数ペア:

[(1, 12390020), (2, 6195010), (4, 3097505), (5, 2478004), (10, 1239002), (20, 619501), (43, 288140), (86, 144070), (172, 72035), (215, 57628), (430, 28814), (860, 14407)]