81572913

素因数分解:

$3^8\times {\mathrm{12433}}^1$

素因数の和:12457

約数の個数: 18

約数和(自身を含む): 122362994

約数和(自身を除く): 40790081

約数列:

[1, 3, 9, 27, 81, 243, 729, 2187, 6561, 12433, 37299, 111897, 335691, 1007073, 3021219, 9063657, 27190971, 81572913]

約数ペア:

[(1, 81572913), (3, 27190971), (9, 9063657), (27, 3021219), (81, 1007073), (243, 335691), (729, 111897), (2187, 37299), (6561, 12433)]