689877891

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{181213}}^1$

素因数の和:181272

約数の個数: 20

約数和(自身を含む): 1052490912

約数和(自身を除く): 362613021

約数列:

[1, 3, 9, 27, 47, 81, 141, 423, 1269, 3807, 181213, 543639, 1630917, 4892751, 8517011, 14678253, 25551033, 76653099, 229959297, 689877891]

約数ペア:

[(1, 689877891), (3, 229959297), (9, 76653099), (27, 25551033), (47, 14678253), (81, 8517011), (141, 4892751), (423, 1630917), (1269, 543639), (3807, 181213)]