21820172

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{45083}}^1$

素因数の和:45109

約数の個数: 18

約数和(自身を含む): 41973204

約数和(自身を除く): 20153032

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 45083, 90166, 180332, 495913, 991826, 1983652, 5455043, 10910086, 21820172]

約数ペア:

[(1, 21820172), (2, 10910086), (4, 5455043), (11, 1983652), (22, 991826), (44, 495913), (121, 180332), (242, 90166), (484, 45083)]