80639960

素因数分解:

$2^3\times 5^1\times {\mathrm{2015999}}^1$

素因数の和:2016010

約数の個数: 16

約数和(自身を含む): 181440000

約数和(自身を除く): 100800040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2015999, 4031998, 8063996, 10079995, 16127992, 20159990, 40319980, 80639960]

約数ペア:

[(1, 80639960), (2, 40319980), (4, 20159990), (5, 16127992), (8, 10079995), (10, 8063996), (20, 4031998), (40, 2015999)]