21188068

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{43777}}^1$

素因数の和:43803

約数の個数: 18

約数和(自身を含む): 40757318

約数和(自身を除く): 19569250

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 43777, 87554, 175108, 481547, 963094, 1926188, 5297017, 10594034, 21188068]

約数ペア:

[(1, 21188068), (2, 10594034), (4, 5297017), (11, 1926188), (22, 963094), (44, 481547), (121, 175108), (242, 87554), (484, 43777)]