19889091

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{463}}^1$

素因数の和:552

約数の個数: 32

約数和(自身を含む): 31032320

約数和(自身を除く): 11143229

約数列:

[1, 3, 9, 27, 37, 43, 111, 129, 333, 387, 463, 999, 1161, 1389, 1591, 4167, 4773, 12501, 14319, 17131, 19909, 42957, 51393, 59727, 154179, 179181, 462537, 537543, 736633, 2209899, 6629697, 19889091]

約数ペア:

[(1, 19889091), (3, 6629697), (9, 2209899), (27, 736633), (37, 537543), (43, 462537), (111, 179181), (129, 154179), (333, 59727), (387, 51393), (463, 42957), (999, 19909), (1161, 17131), (1389, 14319), (1591, 12501), (4167, 4773)]