20998138

素因数分解:

$2^1\times 7^1\times {\mathrm{293}}^1\times {\mathrm{5119}}^1$

素因数の和:5421

約数の個数: 16

約数和(自身を含む): 36126720

約数和(自身を除く): 15128582

約数列:

[1, 2, 7, 14, 293, 586, 2051, 4102, 5119, 10238, 35833, 71666, 1499867, 2999734, 10499069, 20998138]

約数ペア:

[(1, 20998138), (2, 10499069), (7, 2999734), (14, 1499867), (293, 71666), (586, 35833), (2051, 10238), (4102, 5119)]