18440080

素因数分解:

$2^4\times 5^1\times {\mathrm{230501}}^1$

素因数の和:230514

約数の個数: 20

約数和(自身を含む): 42873372

約数和(自身を除く): 24433292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 230501, 461002, 922004, 1152505, 1844008, 2305010, 3688016, 4610020, 9220040, 18440080]

約数ペア:

[(1, 18440080), (2, 9220040), (4, 4610020), (5, 3688016), (8, 2305010), (10, 1844008), (16, 1152505), (20, 922004), (40, 461002), (80, 230501)]