257211318

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{431}}^1\times {\mathrm{1093}}^1$

素因数の和:1549

約数の個数: 64

約数和(自身を含む): 635185152

約数和(自身を除く): 377973834

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 78, 91, 182, 273, 431, 546, 862, 1093, 1293, 2186, 2586, 3017, 3279, 5603, 6034, 6558, 7651, 9051, 11206, 14209, 15302, 16809, 18102, 22953, 28418, 33618, 39221, 42627, 45906, 78442, 85254, 99463, 117663, 198926, 235326, 298389, 471083, 596778, 942166, 1413249, 2826498, 3297581, 6124079, 6595162, 9892743, 12248158, 18372237, 19785486, 36744474, 42868553, 85737106, 128605659, 257211318]

約数ペア:

[(1, 257211318), (2, 128605659), (3, 85737106), (6, 42868553), (7, 36744474), (13, 19785486), (14, 18372237), (21, 12248158), (26, 9892743), (39, 6595162), (42, 6124079), (78, 3297581), (91, 2826498), (182, 1413249), (273, 942166), (431, 596778), (546, 471083), (862, 298389), (1093, 235326), (1293, 198926), (2186, 117663), (2586, 99463), (3017, 85254), (3279, 78442), (5603, 45906), (6034, 42627), (6558, 39221), (7651, 33618), (9051, 28418), (11206, 22953), (14209, 18102), (15302, 16809)]