20990296

素因数分解:

$2^3\times {\mathrm{67}}^1\times {\mathrm{39161}}^1$

素因数の和:39234

約数の個数: 16

約数和(自身を含む): 39945240

約数和(自身を除く): 18954944

約数列:

[1, 2, 4, 8, 67, 134, 268, 536, 39161, 78322, 156644, 313288, 2623787, 5247574, 10495148, 20990296]

約数ペア:

[(1, 20990296), (2, 10495148), (4, 5247574), (8, 2623787), (67, 313288), (134, 156644), (268, 78322), (536, 39161)]