257089716

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{641}}^1\times {\mathrm{857}}^1$

素因数の和:1521

約数の個数: 72

約数和(自身を含む): 701765064

約数和(自身を除く): 444675348

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 234, 468, 641, 857, 1282, 1714, 1923, 2564, 2571, 3428, 3846, 5142, 5769, 7692, 7713, 8333, 10284, 11141, 11538, 15426, 16666, 22282, 23076, 24999, 30852, 33332, 33423, 44564, 49998, 66846, 74997, 99996, 100269, 133692, 149994, 200538, 299988, 401076, 549337, 1098674, 1648011, 2197348, 3296022, 4944033, 6592044, 7141381, 9888066, 14282762, 19776132, 21424143, 28565524, 42848286, 64272429, 85696572, 128544858, 257089716]

約数ペア:

[(1, 257089716), (2, 128544858), (3, 85696572), (4, 64272429), (6, 42848286), (9, 28565524), (12, 21424143), (13, 19776132), (18, 14282762), (26, 9888066), (36, 7141381), (39, 6592044), (52, 4944033), (78, 3296022), (117, 2197348), (156, 1648011), (234, 1098674), (468, 549337), (641, 401076), (857, 299988), (1282, 200538), (1714, 149994), (1923, 133692), (2564, 100269), (2571, 99996), (3428, 74997), (3846, 66846), (5142, 49998), (5769, 44564), (7692, 33423), (7713, 33332), (8333, 30852), (10284, 24999), (11141, 23076), (11538, 22282), (15426, 16666)]