18631280

素因数分解:

$2^4\times 5^1\times {\mathrm{232891}}^1$

素因数の和:232904

約数の個数: 20

約数和(自身を含む): 43317912

約数和(自身を除く): 24686632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 232891, 465782, 931564, 1164455, 1863128, 2328910, 3726256, 4657820, 9315640, 18631280]

約数ペア:

[(1, 18631280), (2, 9315640), (4, 4657820), (5, 3726256), (8, 2328910), (10, 1863128), (16, 1164455), (20, 931564), (40, 465782), (80, 232891)]