21156124

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{43711}}^1$

素因数の和:43737

約数の個数: 18

約数和(自身を含む): 40695872

約数和(自身を除く): 19539748

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 43711, 87422, 174844, 480821, 961642, 1923284, 5289031, 10578062, 21156124]

約数ペア:

[(1, 21156124), (2, 10578062), (4, 5289031), (11, 1923284), (22, 961642), (44, 480821), (121, 174844), (242, 87422), (484, 43711)]