171987020

素因数分解:

$2^2\times 5^1\times {\mathrm{1291}}^1\times {\mathrm{6661}}^1$

素因数の和:7961

約数の個数: 24

約数和(自身を含む): 361506768

約数和(自身を除く): 189519748

約数列:

[1, 2, 4, 5, 10, 20, 1291, 2582, 5164, 6455, 6661, 12910, 13322, 25820, 26644, 33305, 66610, 133220, 8599351, 17198702, 34397404, 42996755, 85993510, 171987020]

約数ペア:

[(1, 171987020), (2, 85993510), (4, 42996755), (5, 34397404), (10, 17198702), (20, 8599351), (1291, 133220), (2582, 66610), (5164, 33305), (6455, 26644), (6661, 25820), (12910, 13322)]