20918001

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{2087}}^1$

素因数の和:2360

約数の個数: 16

約数和(自身を含む): 30167424

約数和(自身を除く): 9249423

約数列:

[1, 3, 13, 39, 257, 771, 2087, 3341, 6261, 10023, 27131, 81393, 536359, 1609077, 6972667, 20918001]

約数ペア:

[(1, 20918001), (3, 6972667), (13, 1609077), (39, 536359), (257, 81393), (771, 27131), (2087, 10023), (3341, 6261)]