21001244

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{43391}}^1$

素因数の和:43417

約数の個数: 18

約数和(自身を含む): 40397952

約数和(自身を除く): 19396708

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 43391, 86782, 173564, 477301, 954602, 1909204, 5250311, 10500622, 21001244]

約数ペア:

[(1, 21001244), (2, 10500622), (4, 5250311), (11, 1909204), (22, 954602), (44, 477301), (121, 173564), (242, 86782), (484, 43391)]