20881564

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{474581}}^1$

素因数の和:474596

約数の個数: 12

約数和(自身を含む): 39864888

約数和(自身を除く): 18983324

約数列:

[1, 2, 4, 11, 22, 44, 474581, 949162, 1898324, 5220391, 10440782, 20881564]

約数ペア:

[(1, 20881564), (2, 10440782), (4, 5220391), (11, 1898324), (22, 949162), (44, 474581)]