25810220

素因数分解:

$2^2\times 5^1\times {\mathrm{1009}}^1\times {\mathrm{1279}}^1$

素因数の和:2297

約数の個数: 24

約数和(自身を含む): 54297600

約数和(自身を除く): 28487380

約数列:

[1, 2, 4, 5, 10, 20, 1009, 1279, 2018, 2558, 4036, 5045, 5116, 6395, 10090, 12790, 20180, 25580, 1290511, 2581022, 5162044, 6452555, 12905110, 25810220]

約数ペア:

[(1, 25810220), (2, 12905110), (4, 6452555), (5, 5162044), (10, 2581022), (20, 1290511), (1009, 25580), (1279, 20180), (2018, 12790), (2558, 10090), (4036, 6395), (5045, 5116)]