21749608

素因数分解:

$2^3\times {\mathrm{139}}^1\times {\mathrm{19559}}^1$

素因数の和:19704

約数の個数: 16

約数和(自身を含む): 41076000

約数和(自身を除く): 19326392

約数列:

[1, 2, 4, 8, 139, 278, 556, 1112, 19559, 39118, 78236, 156472, 2718701, 5437402, 10874804, 21749608]

約数ペア:

[(1, 21749608), (2, 10874804), (4, 5437402), (8, 2718701), (139, 156472), (278, 78236), (556, 39118), (1112, 19559)]