20267991

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{179}}^1\times {\mathrm{547}}^1$

素因数の和:755

約数の個数: 24

約数和(自身を含む): 30775680

約数和(自身を除く): 10507689

約数列:

[1, 3, 9, 23, 69, 179, 207, 537, 547, 1611, 1641, 4117, 4923, 12351, 12581, 37053, 37743, 97913, 113229, 293739, 881217, 2251999, 6755997, 20267991]

約数ペア:

[(1, 20267991), (3, 6755997), (9, 2251999), (23, 881217), (69, 293739), (179, 113229), (207, 97913), (537, 37743), (547, 37053), (1611, 12581), (1641, 12351), (4117, 4923)]