20866581

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{193}}^1\times {\mathrm{293}}^1$

素因数の和:533

約数の個数: 24

約数和(自身を含む): 31141656

約数和(自身を除く): 10275075

約数列:

[1, 3, 9, 41, 123, 193, 293, 369, 579, 879, 1737, 2637, 7913, 12013, 23739, 36039, 56549, 71217, 108117, 169647, 508941, 2318509, 6955527, 20866581]

約数ペア:

[(1, 20866581), (3, 6955527), (9, 2318509), (41, 508941), (123, 169647), (193, 108117), (293, 71217), (369, 56549), (579, 36039), (879, 23739), (1737, 12013), (2637, 7913)]