20709115

素因数分解:

$5^1\times 7^2\times {\mathrm{181}}^1\times {\mathrm{467}}^1$

素因数の和:667

約数の個数: 24

約数和(自身を含む): 29130192

約数和(自身を除く): 8421077

約数列:

[1, 5, 7, 35, 49, 181, 245, 467, 905, 1267, 2335, 3269, 6335, 8869, 16345, 22883, 44345, 84527, 114415, 422635, 591689, 2958445, 4141823, 20709115]

約数ペア:

[(1, 20709115), (5, 4141823), (7, 2958445), (35, 591689), (49, 422635), (181, 114415), (245, 84527), (467, 44345), (905, 22883), (1267, 16345), (2335, 8869), (3269, 6335)]