21123099

素因数分解:

$3^4\times {\mathrm{79}}^1\times {\mathrm{3301}}^1$

素因数の和:3392

約数の個数: 20

約数和(自身を含む): 31963360

約数和(自身を除く): 10840261

約数列:

[1, 3, 9, 27, 79, 81, 237, 711, 2133, 3301, 6399, 9903, 29709, 89127, 260779, 267381, 782337, 2347011, 7041033, 21123099]

約数ペア:

[(1, 21123099), (3, 7041033), (9, 2347011), (27, 782337), (79, 267381), (81, 260779), (237, 89127), (711, 29709), (2133, 9903), (3301, 6399)]