208696581

素因数分解:

$3^4\times {\mathrm{643}}^1\times {\mathrm{4007}}^1$

素因数の和:4662

約数の個数: 20

約数和(自身を含む): 312319392

約数和(自身を除く): 103622811

約数列:

[1, 3, 9, 27, 81, 643, 1929, 4007, 5787, 12021, 17361, 36063, 52083, 108189, 324567, 2576501, 7729503, 23188509, 69565527, 208696581]

約数ペア:

[(1, 208696581), (3, 69565527), (9, 23188509), (27, 7729503), (81, 2576501), (643, 324567), (1929, 108189), (4007, 52083), (5787, 36063), (12021, 17361)]