440080

素因数分解:

$2^4\times 5^1\times {\mathrm{5501}}^1$

素因数の和:5514

約数の個数: 20

約数和(自身を含む): 1023372

約数和(自身を除く): 583292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 5501, 11002, 22004, 27505, 44008, 55010, 88016, 110020, 220040, 440080]

約数ペア:

[(1, 440080), (2, 220040), (4, 110020), (5, 88016), (8, 55010), (10, 44008), (16, 27505), (20, 22004), (40, 11002), (80, 5501)]