19626440

素因数分解:

$2^3\times 5^1\times {\mathrm{490661}}^1$

素因数の和:490672

約数の個数: 16

約数和(自身を含む): 44159580

約数和(自身を除く): 24533140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 490661, 981322, 1962644, 2453305, 3925288, 4906610, 9813220, 19626440]

約数ペア:

[(1, 19626440), (2, 9813220), (4, 4906610), (5, 3925288), (8, 2453305), (10, 1962644), (20, 981322), (40, 490661)]