18871407

素因数分解:

$3^3\times {\mathrm{643}}^1\times {\mathrm{1087}}^1$

素因数の和:1739

約数の個数: 16

約数和(自身を含む): 28026880

約数和(自身を除く): 9155473

約数列:

[1, 3, 9, 27, 643, 1087, 1929, 3261, 5787, 9783, 17361, 29349, 698941, 2096823, 6290469, 18871407]

約数ペア:

[(1, 18871407), (3, 6290469), (9, 2096823), (27, 698941), (643, 29349), (1087, 17361), (1929, 9783), (3261, 5787)]