16920080

素因数分解:

$2^4\times 5^1\times {\mathrm{211501}}^1$

素因数の和:211514

約数の個数: 20

約数和(自身を含む): 39339372

約数和(自身を除く): 22419292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 211501, 423002, 846004, 1057505, 1692008, 2115010, 3384016, 4230020, 8460040, 16920080]

約数ペア:

[(1, 16920080), (2, 8460040), (4, 4230020), (5, 3384016), (8, 2115010), (10, 1692008), (16, 1057505), (20, 846004), (40, 423002), (80, 211501)]