19820968

素因数分解:

$2^3\times {\mathrm{251}}^1\times {\mathrm{9871}}^1$

素因数の和:10128

約数の個数: 16

約数和(自身を含む): 37316160

約数和(自身を除く): 17495192

約数列:

[1, 2, 4, 8, 251, 502, 1004, 2008, 9871, 19742, 39484, 78968, 2477621, 4955242, 9910484, 19820968]

約数ペア:

[(1, 19820968), (2, 9910484), (4, 4955242), (8, 2477621), (251, 78968), (502, 39484), (1004, 19742), (2008, 9871)]