21131564

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{269}}^1\times {\mathrm{479}}^1$

素因数の和:793

約数の個数: 24

約数和(自身を含む): 38102400

約数和(自身を除く): 16970836

約数列:

[1, 2, 4, 41, 82, 164, 269, 479, 538, 958, 1076, 1916, 11029, 19639, 22058, 39278, 44116, 78556, 128851, 257702, 515404, 5282891, 10565782, 21131564]

約数ペア:

[(1, 21131564), (2, 10565782), (4, 5282891), (41, 515404), (82, 257702), (164, 128851), (269, 78556), (479, 44116), (538, 39278), (958, 22058), (1076, 19639), (1916, 11029)]