20040080

素因数分解:

$2^4\times 5^1\times {\mathrm{250501}}^1$

素因数の和:250514

約数の個数: 20

約数和(自身を含む): 46593372

約数和(自身を除く): 26553292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 250501, 501002, 1002004, 1252505, 2004008, 2505010, 4008016, 5010020, 10020040, 20040080]

約数ペア:

[(1, 20040080), (2, 10020040), (4, 5010020), (5, 4008016), (8, 2505010), (10, 2004008), (16, 1252505), (20, 1002004), (40, 501002), (80, 250501)]