257907717

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{503}}^1\times {\mathrm{2477}}^1$

素因数の和:3009

約数の個数: 24

約数和(自身を含む): 389660544

約数和(自身を除く): 131752827

約数列:

[1, 3, 9, 23, 69, 207, 503, 1509, 2477, 4527, 7431, 11569, 22293, 34707, 56971, 104121, 170913, 512739, 1245931, 3737793, 11213379, 28656413, 85969239, 257907717]

約数ペア:

[(1, 257907717), (3, 85969239), (9, 28656413), (23, 11213379), (69, 3737793), (207, 1245931), (503, 512739), (1509, 170913), (2477, 104121), (4527, 56971), (7431, 34707), (11569, 22293)]