9920080

素因数分解:

$2^4\times 5^1\times {\mathrm{124001}}^1$

素因数の和:124014

約数の個数: 20

約数和(自身を含む): 23064372

約数和(自身を除く): 13144292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 124001, 248002, 496004, 620005, 992008, 1240010, 1984016, 2480020, 4960040, 9920080]

約数ペア:

[(1, 9920080), (2, 4960040), (4, 2480020), (5, 1984016), (8, 1240010), (10, 992008), (16, 620005), (20, 496004), (40, 248002), (80, 124001)]