21890709

素因数分解:

$3^3\times {\mathrm{67}}^1\times {\mathrm{12101}}^1$

素因数の和:12177

約数の個数: 16

約数和(自身を含む): 32917440

約数和(自身を除く): 11026731

約数列:

[1, 3, 9, 27, 67, 201, 603, 1809, 12101, 36303, 108909, 326727, 810767, 2432301, 7296903, 21890709]

約数ペア:

[(1, 21890709), (3, 7296903), (9, 2432301), (27, 810767), (67, 326727), (201, 108909), (603, 36303), (1809, 12101)]