81299619

素因数分解:

$3^4\times {\mathrm{37}}^1\times {\mathrm{27127}}^1$

素因数の和:27176

約数の個数: 20

約数和(自身を含む): 124734544

約数和(自身を除く): 43434925

約数列:

[1, 3, 9, 27, 37, 81, 111, 333, 999, 2997, 27127, 81381, 244143, 732429, 1003699, 2197287, 3011097, 9033291, 27099873, 81299619]

約数ペア:

[(1, 81299619), (3, 27099873), (9, 9033291), (27, 3011097), (37, 2197287), (81, 1003699), (111, 732429), (333, 244143), (999, 81381), (2997, 27127)]