20987258

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{127}}^1\times {\mathrm{1559}}^1$

素因数の和:1741

約数の個数: 16

約数和(自身を含む): 32348160

約数和(自身を除く): 11360902

約数列:

[1, 2, 53, 106, 127, 254, 1559, 3118, 6731, 13462, 82627, 165254, 197993, 395986, 10493629, 20987258]

約数ペア:

[(1, 20987258), (2, 10493629), (53, 395986), (106, 197993), (127, 165254), (254, 82627), (1559, 13462), (3118, 6731)]