399442516

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{401}}^1\times {\mathrm{22639}}^1$

素因数の和:23055

約数の個数: 24

約数和(自身を含む): 764507520

約数和(自身を除く): 365065004

約数列:

[1, 2, 4, 11, 22, 44, 401, 802, 1604, 4411, 8822, 17644, 22639, 45278, 90556, 249029, 498058, 996116, 9078239, 18156478, 36312956, 99860629, 199721258, 399442516]

約数ペア:

[(1, 399442516), (2, 199721258), (4, 99860629), (11, 36312956), (22, 18156478), (44, 9078239), (401, 996116), (802, 498058), (1604, 249029), (4411, 90556), (8822, 45278), (17644, 22639)]