81961767

素因数分解:

$3^3\times {\mathrm{139}}^1\times {\mathrm{21839}}^1$

素因数の和:21987

約数の個数: 16

約数和(自身を含む): 122304000

約数和(自身を除く): 40342233

約数列:

[1, 3, 9, 27, 139, 417, 1251, 3753, 21839, 65517, 196551, 589653, 3035621, 9106863, 27320589, 81961767]

約数ペア:

[(1, 81961767), (3, 27320589), (9, 9106863), (27, 3035621), (139, 589653), (417, 196551), (1251, 65517), (3753, 21839)]