28240390

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{68879}}^1$

素因数の和:68927

約数の個数: 16

約数和(自身を含む): 52073280

約数和(自身を除く): 23832890

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 68879, 137758, 344395, 688790, 2824039, 5648078, 14120195, 28240390]

約数ペア:

[(1, 28240390), (2, 14120195), (5, 5648078), (10, 2824039), (41, 688790), (82, 344395), (205, 137758), (410, 68879)]