21118372

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{43633}}^1$

素因数の和:43659

約数の個数: 18

約数和(自身を含む): 40623254

約数和(自身を除く): 19504882

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 43633, 87266, 174532, 479963, 959926, 1919852, 5279593, 10559186, 21118372]

約数ペア:

[(1, 21118372), (2, 10559186), (4, 5279593), (11, 1919852), (22, 959926), (44, 479963), (121, 174532), (242, 87266), (484, 43633)]