18420453

素因数分解:

$3^4\times {\mathrm{71}}^1\times {\mathrm{3203}}^1$

素因数の和:3286

約数の個数: 20

約数和(自身を含む): 27913248

約数和(自身を除く): 9492795

約数列:

[1, 3, 9, 27, 71, 81, 213, 639, 1917, 3203, 5751, 9609, 28827, 86481, 227413, 259443, 682239, 2046717, 6140151, 18420453]

約数ペア:

[(1, 18420453), (3, 6140151), (9, 2046717), (27, 682239), (71, 259443), (81, 227413), (213, 86481), (639, 28827), (1917, 9609), (3203, 5751)]