8720120

素因数分解:

$2^3\times 5^1\times {\mathrm{218003}}^1$

素因数の和:218014

約数の個数: 16

約数和(自身を含む): 19620360

約数和(自身を除く): 10900240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 218003, 436006, 872012, 1090015, 1744024, 2180030, 4360060, 8720120]

約数ペア:

[(1, 8720120), (2, 4360060), (4, 2180030), (5, 1744024), (8, 1090015), (10, 872012), (20, 436006), (40, 218003)]