21818410

素因数分解:

$2^1\times 5^1\times {\mathrm{401}}^1\times {\mathrm{5441}}^1$

素因数の和:5849

約数の個数: 16

約数和(自身を含む): 39378312

約数和(自身を除く): 17559902

約数列:

[1, 2, 5, 10, 401, 802, 2005, 4010, 5441, 10882, 27205, 54410, 2181841, 4363682, 10909205, 21818410]

約数ペア:

[(1, 21818410), (2, 10909205), (5, 4363682), (10, 2181841), (401, 54410), (802, 27205), (2005, 10882), (4010, 5441)]