28225880

素因数分解:

$2^3\times 5^1\times {\mathrm{353}}^1\times {\mathrm{1999}}^1$

素因数の和:2363

約数の個数: 32

約数和(自身を含む): 63720000

約数和(自身を除く): 35494120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 353, 706, 1412, 1765, 1999, 2824, 3530, 3998, 7060, 7996, 9995, 14120, 15992, 19990, 39980, 79960, 705647, 1411294, 2822588, 3528235, 5645176, 7056470, 14112940, 28225880]

約数ペア:

[(1, 28225880), (2, 14112940), (4, 7056470), (5, 5645176), (8, 3528235), (10, 2822588), (20, 1411294), (40, 705647), (353, 79960), (706, 39980), (1412, 19990), (1765, 15992), (1999, 14120), (2824, 9995), (3530, 7996), (3998, 7060)]