28003120

素因数分解:

$2^4\times 5^1\times {\mathrm{350039}}^1$

素因数の和:350052

約数の個数: 20

約数和(自身を含む): 65107440

約数和(自身を除く): 37104320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 350039, 700078, 1400156, 1750195, 2800312, 3500390, 5600624, 7000780, 14001560, 28003120]

約数ペア:

[(1, 28003120), (2, 14001560), (4, 7000780), (5, 5600624), (8, 3500390), (10, 2800312), (16, 1750195), (20, 1400156), (40, 700078), (80, 350039)]