20128868

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{883}}^1$

素因数の和:1067

約数の個数: 24

約数和(自身を含む): 36385440

約数和(自身を除く): 16256572

約数列:

[1, 2, 4, 41, 82, 139, 164, 278, 556, 883, 1766, 3532, 5699, 11398, 22796, 36203, 72406, 122737, 144812, 245474, 490948, 5032217, 10064434, 20128868]

約数ペア:

[(1, 20128868), (2, 10064434), (4, 5032217), (41, 490948), (82, 245474), (139, 144812), (164, 122737), (278, 72406), (556, 36203), (883, 22796), (1766, 11398), (3532, 5699)]