12721779

素因数分解:

$3^8\times 7^1\times {\mathrm{277}}^1$

素因数の和:308

約数の個数: 36

約数和(自身を含む): 21886384

約数和(自身を除く): 9164605

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 277, 567, 729, 831, 1701, 1939, 2187, 2493, 5103, 5817, 6561, 7479, 15309, 17451, 22437, 45927, 52353, 67311, 157059, 201933, 471177, 605799, 1413531, 1817397, 4240593, 12721779]

約数ペア:

[(1, 12721779), (3, 4240593), (7, 1817397), (9, 1413531), (21, 605799), (27, 471177), (63, 201933), (81, 157059), (189, 67311), (243, 52353), (277, 45927), (567, 22437), (729, 17451), (831, 15309), (1701, 7479), (1939, 6561), (2187, 5817), (2493, 5103)]