20818292

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{43013}}^1$

素因数の和:43039

約数の個数: 18

約数和(自身を含む): 40046034

約数和(自身を除く): 19227742

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 43013, 86026, 172052, 473143, 946286, 1892572, 5204573, 10409146, 20818292]

約数ペア:

[(1, 20818292), (2, 10409146), (4, 5204573), (11, 1892572), (22, 946286), (44, 473143), (121, 172052), (242, 86026), (484, 43013)]