20826884

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{30809}}^1$

素因数の和:30839

約数の個数: 18

約数和(自身を含む): 39467610

約数和(自身を除く): 18640726

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 30809, 61618, 123236, 400517, 801034, 1602068, 5206721, 10413442, 20826884]

約数ペア:

[(1, 20826884), (2, 10413442), (4, 5206721), (13, 1602068), (26, 801034), (52, 400517), (169, 123236), (338, 61618), (676, 30809)]