20565009

素因数分解:

$3^4\times {\mathrm{307}}^1\times {\mathrm{827}}^1$

素因数の和:1146

約数の個数: 20

約数和(自身を含む): 30857904

約数和(自身を除く): 10292895

約数列:

[1, 3, 9, 27, 81, 307, 827, 921, 2481, 2763, 7443, 8289, 22329, 24867, 66987, 253889, 761667, 2285001, 6855003, 20565009]

約数ペア:

[(1, 20565009), (3, 6855003), (9, 2285001), (27, 761667), (81, 253889), (307, 66987), (827, 24867), (921, 22329), (2481, 8289), (2763, 7443)]