80406440

素因数分解:

$2^3\times 5^1\times {\mathrm{2010161}}^1$

素因数の和:2010172

約数の個数: 16

約数和(自身を含む): 180914580

約数和(自身を除く): 100508140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2010161, 4020322, 8040644, 10050805, 16081288, 20101610, 40203220, 80406440]

約数ペア:

[(1, 80406440), (2, 40203220), (4, 20101610), (5, 16081288), (8, 10050805), (10, 8040644), (20, 4020322), (40, 2010161)]