21045177

素因数分解:

$3^4\times {\mathrm{41}}^1\times {\mathrm{6337}}^1$

素因数の和:6390

約数の個数: 20

約数和(自身を含む): 32209716

約数和(自身を除く): 11164539

約数列:

[1, 3, 9, 27, 41, 81, 123, 369, 1107, 3321, 6337, 19011, 57033, 171099, 259817, 513297, 779451, 2338353, 7015059, 21045177]

約数ペア:

[(1, 21045177), (3, 7015059), (9, 2338353), (27, 779451), (41, 513297), (81, 259817), (123, 171099), (369, 57033), (1107, 19011), (3321, 6337)]