21990933

素因数分解:

$3^4\times {\mathrm{83}}^1\times {\mathrm{3271}}^1$

素因数の和:3366

約数の個数: 20

約数和(自身を含む): 33256608

約数和(自身を除く): 11265675

約数列:

[1, 3, 9, 27, 81, 83, 249, 747, 2241, 3271, 6723, 9813, 29439, 88317, 264951, 271493, 814479, 2443437, 7330311, 21990933]

約数ペア:

[(1, 21990933), (3, 7330311), (9, 2443437), (27, 814479), (81, 271493), (83, 264951), (249, 88317), (747, 29439), (2241, 9813), (3271, 6723)]