21664405

素因数分解:

$5^1\times 7^1\times {\mathrm{701}}^1\times {\mathrm{883}}^1$

素因数の和:1596

約数の個数: 16

約数和(自身を含む): 29787264

約数和(自身を除く): 8122859

約数列:

[1, 5, 7, 35, 701, 883, 3505, 4415, 4907, 6181, 24535, 30905, 618983, 3094915, 4332881, 21664405]

約数ペア:

[(1, 21664405), (5, 4332881), (7, 3094915), (35, 618983), (701, 30905), (883, 24535), (3505, 6181), (4415, 4907)]