80640680

素因数分解:

$2^3\times 5^1\times {\mathrm{2016017}}^1$

素因数の和:2016028

約数の個数: 16

約数和(自身を含む): 181441620

約数和(自身を除く): 100800940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2016017, 4032034, 8064068, 10080085, 16128136, 20160170, 40320340, 80640680]

約数ペア:

[(1, 80640680), (2, 40320340), (4, 20160170), (5, 16128136), (8, 10080085), (10, 8064068), (20, 4032034), (40, 2016017)]