20921784779

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{331}}^1\times {\mathrm{192121}}^1$

素因数の和:192506

約数の個数: 16

約数和(自身を含む): 24493249536

約数和(自身を除く): 3571464757

約数列:

[1, 7, 47, 329, 331, 2317, 15557, 108899, 192121, 1344847, 9029687, 63207809, 63592051, 445144357, 2988826397, 20921784779]

約数ペア:

[(1, 20921784779), (7, 2988826397), (47, 445144357), (329, 63592051), (331, 63207809), (2317, 9029687), (15557, 1344847), (108899, 192121)]