21438256

素因数分解:

$2^4\times 7^1\times {\mathrm{191413}}^1$

素因数の和:191428

約数の個数: 20

約数和(自身を含む): 47470672

約数和(自身を除く): 26032416

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 191413, 382826, 765652, 1339891, 1531304, 2679782, 3062608, 5359564, 10719128, 21438256]

約数ペア:

[(1, 21438256), (2, 10719128), (4, 5359564), (7, 3062608), (8, 2679782), (14, 1531304), (16, 1339891), (28, 765652), (56, 382826), (112, 191413)]