180080

素因数分解:

$2^4\times 5^1\times {\mathrm{2251}}^1$

素因数の和:2264

約数の個数: 20

約数和(自身を含む): 418872

約数和(自身を除く): 238792

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2251, 4502, 9004, 11255, 18008, 22510, 36016, 45020, 90040, 180080]

約数ペア:

[(1, 180080), (2, 90040), (4, 45020), (5, 36016), (8, 22510), (10, 18008), (16, 11255), (20, 9004), (40, 4502), (80, 2251)]