21138124

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{18413}}^1$

素因数の和:18465

約数の個数: 24

約数和(自身を含む): 43309728

約数和(自身を除く): 22171604

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 164, 287, 574, 1148, 18413, 36826, 73652, 128891, 257782, 515564, 754933, 1509866, 3019732, 5284531, 10569062, 21138124]

約数ペア:

[(1, 21138124), (2, 10569062), (4, 5284531), (7, 3019732), (14, 1509866), (28, 754933), (41, 515564), (82, 257782), (164, 128891), (287, 73652), (574, 36826), (1148, 18413)]