1680080

素因数分解:

$2^4\times 5^1\times {\mathrm{21001}}^1$

素因数の和:21014

約数の個数: 20

約数和(自身を含む): 3906372

約数和(自身を除く): 2226292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 21001, 42002, 84004, 105005, 168008, 210010, 336016, 420020, 840040, 1680080]

約数ペア:

[(1, 1680080), (2, 840040), (4, 420020), (5, 336016), (8, 210010), (10, 168008), (16, 105005), (20, 84004), (40, 42002), (80, 21001)]