28520080

素因数分解:

$2^4\times 5^1\times {\mathrm{356501}}^1$

素因数の和:356514

約数の個数: 20

約数和(自身を含む): 66309372

約数和(自身を除く): 37789292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 356501, 713002, 1426004, 1782505, 2852008, 3565010, 5704016, 7130020, 14260040, 28520080]

約数ペア:

[(1, 28520080), (2, 14260040), (4, 7130020), (5, 5704016), (8, 3565010), (10, 2852008), (16, 1782505), (20, 1426004), (40, 713002), (80, 356501)]