20525920

素因数分解:

$2^5\times 5^1\times {\mathrm{128287}}^1$

素因数の和:128302

約数の個数: 24

約数和(自身を含む): 48492864

約数和(自身を除く): 27966944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 128287, 256574, 513148, 641435, 1026296, 1282870, 2052592, 2565740, 4105184, 5131480, 10262960, 20525920]

約数ペア:

[(1, 20525920), (2, 10262960), (4, 5131480), (5, 4105184), (8, 2565740), (10, 2052592), (16, 1282870), (20, 1026296), (32, 641435), (40, 513148), (80, 256574), (160, 128287)]