20408888

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{134269}}^1$

素因数の和:134294

約数の個数: 16

約数和(自身を含む): 40281000

約数和(自身を除く): 19872112

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 134269, 268538, 537076, 1074152, 2551111, 5102222, 10204444, 20408888]

約数ペア:

[(1, 20408888), (2, 10204444), (4, 5102222), (8, 2551111), (19, 1074152), (38, 537076), (76, 268538), (152, 134269)]