2178819

素因数分解:

$3^4\times {\mathrm{37}}^1\times {\mathrm{727}}^1$

素因数の和:776

約数の個数: 20

約数和(自身を含む): 3347344

約数和(自身を除く): 1168525

約数列:

[1, 3, 9, 27, 37, 81, 111, 333, 727, 999, 2181, 2997, 6543, 19629, 26899, 58887, 80697, 242091, 726273, 2178819]

約数ペア:

[(1, 2178819), (3, 726273), (9, 242091), (27, 80697), (37, 58887), (81, 26899), (111, 19629), (333, 6543), (727, 2997), (999, 2181)]