80320120

素因数分解:

$2^3\times 5^1\times {\mathrm{2008003}}^1$

素因数の和:2008014

約数の個数: 16

約数和(自身を含む): 180720360

約数和(自身を除く): 100400240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2008003, 4016006, 8032012, 10040015, 16064024, 20080030, 40160060, 80320120]

約数ペア:

[(1, 80320120), (2, 40160060), (4, 20080030), (5, 16064024), (8, 10040015), (10, 8032012), (20, 4016006), (40, 2008003)]