855953217

素因数分解:

$3^3\times 7^2\times {\mathrm{646979}}^1$

素因数の和:647002

約数の個数: 24

約数和(自身を含む): 1475114400

約数和(自身を除く): 619161183

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 646979, 1940937, 4528853, 5822811, 13586559, 17468433, 31701971, 40759677, 95105913, 122279031, 285317739, 855953217]

約数ペア:

[(1, 855953217), (3, 285317739), (7, 122279031), (9, 95105913), (21, 40759677), (27, 31701971), (49, 17468433), (63, 13586559), (147, 5822811), (189, 4528853), (441, 1940937), (1323, 646979)]