20809474

素因数分解:

$2^1\times 7^1\times {\mathrm{349}}^1\times {\mathrm{4259}}^1$

素因数の和:4617

約数の個数: 16

約数和(自身を含む): 35784000

約数和(自身を除く): 14974526

約数列:

[1, 2, 7, 14, 349, 698, 2443, 4259, 4886, 8518, 29813, 59626, 1486391, 2972782, 10404737, 20809474]

約数ペア:

[(1, 20809474), (2, 10404737), (7, 2972782), (14, 1486391), (349, 59626), (698, 29813), (2443, 8518), (4259, 4886)]