2640027

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{487}}^1$

素因数の和:642

約数の個数: 16

約数和(自身を含む): 3825920

約数和(自身を除く): 1185893

約数列:

[1, 3, 13, 39, 139, 417, 487, 1461, 1807, 5421, 6331, 18993, 67693, 203079, 880009, 2640027]

約数ペア:

[(1, 2640027), (3, 880009), (13, 203079), (39, 67693), (139, 18993), (417, 6331), (487, 5421), (1461, 1807)]