21065967

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{60017}}^1$

素因数の和:60039

約数の個数: 16

約数和(自身を含む): 33610080

約数和(自身を除く): 12544113

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 60017, 180051, 540153, 780221, 1620459, 2340663, 7021989, 21065967]

約数ペア:

[(1, 21065967), (3, 7021989), (9, 2340663), (13, 1620459), (27, 780221), (39, 540153), (117, 180051), (351, 60017)]