257403609

素因数分解:

$3^3\times {\mathrm{109}}^1\times {\mathrm{149}}^1\times {\mathrm{587}}^1$

素因数の和:854

約数の個数: 32

約数和(自身を含む): 388080000

約数和(自身を除く): 130676391

約数列:

[1, 3, 9, 27, 109, 149, 327, 447, 587, 981, 1341, 1761, 2943, 4023, 5283, 15849, 16241, 48723, 63983, 87463, 146169, 191949, 262389, 438507, 575847, 787167, 1727541, 2361501, 9533467, 28600401, 85801203, 257403609]

約数ペア:

[(1, 257403609), (3, 85801203), (9, 28600401), (27, 9533467), (109, 2361501), (149, 1727541), (327, 787167), (447, 575847), (587, 438507), (981, 262389), (1341, 191949), (1761, 146169), (2943, 87463), (4023, 63983), (5283, 48723), (15849, 16241)]