21331208

素因数分解:

$2^3\times {\mathrm{199}}^1\times {\mathrm{13399}}^1$

素因数の和:13604

約数の個数: 16

約数和(自身を含む): 40200000

約数和(自身を除く): 18868792

約数列:

[1, 2, 4, 8, 199, 398, 796, 1592, 13399, 26798, 53596, 107192, 2666401, 5332802, 10665604, 21331208]

約数ペア:

[(1, 21331208), (2, 10665604), (4, 5332802), (8, 2666401), (199, 107192), (398, 53596), (796, 26798), (1592, 13399)]