1635280

素因数分解:

$2^4\times 5^1\times {\mathrm{20441}}^1$

素因数の和:20454

約数の個数: 20

約数和(自身を含む): 3802212

約数和(自身を除く): 2166932

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 20441, 40882, 81764, 102205, 163528, 204410, 327056, 408820, 817640, 1635280]

約数ペア:

[(1, 1635280), (2, 817640), (4, 408820), (5, 327056), (8, 204410), (10, 163528), (16, 102205), (20, 81764), (40, 40882), (80, 20441)]