21291644

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{43991}}^1$

素因数の和:44017

約数の個数: 18

約数和(自身を含む): 40956552

約数和(自身を除く): 19664908

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 43991, 87982, 175964, 483901, 967802, 1935604, 5322911, 10645822, 21291644]

約数ペア:

[(1, 21291644), (2, 10645822), (4, 5322911), (11, 1935604), (22, 967802), (44, 483901), (121, 175964), (242, 87982), (484, 43991)]