261799989

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{30869}}^1$

素因数の和:31140

約数の個数: 16

約数和(自身を含む): 382294080

約数和(自身を除く): 120494091

約数列:

[1, 3, 11, 33, 257, 771, 2827, 8481, 30869, 92607, 339559, 1018677, 7933333, 23799999, 87266663, 261799989]

約数ペア:

[(1, 261799989), (3, 87266663), (11, 23799999), (33, 7933333), (257, 1018677), (771, 339559), (2827, 92607), (8481, 30869)]