21067396

素因数分解:

$2^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{5413}}^1$

素因数の和:5563

約数の個数: 24

約数和(自身を含む): 42445760

約数和(自身を除く): 21378364

約数列:

[1, 2, 4, 7, 14, 28, 139, 278, 556, 973, 1946, 3892, 5413, 10826, 21652, 37891, 75782, 151564, 752407, 1504814, 3009628, 5266849, 10533698, 21067396]

約数ペア:

[(1, 21067396), (2, 10533698), (4, 5266849), (7, 3009628), (14, 1504814), (28, 752407), (139, 151564), (278, 75782), (556, 37891), (973, 21652), (1946, 10826), (3892, 5413)]