21864088863

素因数分解:

$3^4\times {\mathrm{641}}^1\times {\mathrm{421103}}^1$

素因数の和:421756

約数の個数: 20

約数和(自身を含む): 32712200928

約数和(自身を除く): 10848112065

約数列:

[1, 3, 9, 27, 81, 641, 1923, 5769, 17307, 51921, 421103, 1263309, 3789927, 11369781, 34109343, 269927023, 809781069, 2429343207, 7288029621, 21864088863]

約数ペア:

[(1, 21864088863), (3, 7288029621), (9, 2429343207), (27, 809781069), (81, 269927023), (641, 34109343), (1923, 11369781), (5769, 3789927), (17307, 1263309), (51921, 421103)]