20979974

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{383}}^1\times {\mathrm{449}}^1$

素因数の和:895

約数の個数: 16

約数和(自身を含む): 32140800

約数和(自身を除く): 11160826

約数列:

[1, 2, 61, 122, 383, 449, 766, 898, 23363, 27389, 46726, 54778, 171967, 343934, 10489987, 20979974]

約数ペア:

[(1, 20979974), (2, 10489987), (61, 343934), (122, 171967), (383, 54778), (449, 46726), (766, 27389), (898, 23363)]