20688418

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{2207}}^1$

素因数の和:2361

約数の個数: 16

約数和(自身を含む): 32060160

約数和(自身を除く): 11371742

約数列:

[1, 2, 43, 86, 109, 218, 2207, 4414, 4687, 9374, 94901, 189802, 240563, 481126, 10344209, 20688418]

約数ペア:

[(1, 20688418), (2, 10344209), (43, 481126), (86, 240563), (109, 189802), (218, 94901), (2207, 9374), (4414, 4687)]