398437312

素因数分解:

$2^6\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^2$

素因数の和:155

約数の個数: 168

約数和(自身を含む): 1023189216

約数和(自身を除く): 624751904

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 37, 43, 52, 56, 64, 74, 86, 91, 104, 112, 148, 172, 182, 208, 224, 259, 296, 301, 344, 364, 416, 448, 481, 518, 559, 592, 602, 688, 728, 832, 962, 1036, 1118, 1184, 1204, 1376, 1456, 1591, 1849, 1924, 2072, 2236, 2368, 2408, 2752, 2912, 3182, 3367, 3698, 3848, 3913, 4144, 4472, 4816, 5824, 6364, 6734, 7396, 7696, 7826, 8288, 8944, 9632, 11137, 12728, 12943, 13468, 14792, 15392, 15652, 16576, 17888, 19264, 20683, 22274, 24037, 25456, 25886, 26936, 29584, 30784, 31304, 35776, 41366, 44548, 48074, 50912, 51772, 53872, 59168, 62608, 68413, 82732, 89096, 96148, 101824, 103544, 107744, 118336, 125216, 136826, 144781, 165464, 168259, 178192, 192296, 207088, 215488, 250432, 273652, 289562, 330928, 336518, 356384, 384592, 414176, 478891, 547304, 579124, 661856, 673036, 712768, 769184, 828352, 889369, 957782, 1094608, 1158248, 1323712, 1346072, 1538368, 1778738, 1915564, 2189216, 2316496, 2692144, 3557476, 3831128, 4378432, 4632992, 5384288, 6225583, 7114952, 7662256, 9265984, 10768576, 12451166, 14229904, 15324512, 24902332, 28459808, 30649024, 49804664, 56919616, 99609328, 199218656, 398437312]

約数ペア:

[(1, 398437312), (2, 199218656), (4, 99609328), (7, 56919616), (8, 49804664), (13, 30649024), (14, 28459808), (16, 24902332), (26, 15324512), (28, 14229904), (32, 12451166), (37, 10768576), (43, 9265984), (52, 7662256), (56, 7114952), (64, 6225583), (74, 5384288), (86, 4632992), (91, 4378432), (104, 3831128), (112, 3557476), (148, 2692144), (172, 2316496), (182, 2189216), (208, 1915564), (224, 1778738), (259, 1538368), (296, 1346072), (301, 1323712), (344, 1158248), (364, 1094608), (416, 957782), (448, 889369), (481, 828352), (518, 769184), (559, 712768), (592, 673036), (602, 661856), (688, 579124), (728, 547304), (832, 478891), (962, 414176), (1036, 384592), (1118, 356384), (1184, 336518), (1204, 330928), (1376, 289562), (1456, 273652), (1591, 250432), (1849, 215488), (1924, 207088), (2072, 192296), (2236, 178192), (2368, 168259), (2408, 165464), (2752, 144781), (2912, 136826), (3182, 125216), (3367, 118336), (3698, 107744), (3848, 103544), (3913, 101824), (4144, 96148), (4472, 89096), (4816, 82732), (5824, 68413), (6364, 62608), (6734, 59168), (7396, 53872), (7696, 51772), (7826, 50912), (8288, 48074), (8944, 44548), (9632, 41366), (11137, 35776), (12728, 31304), (12943, 30784), (13468, 29584), (14792, 26936), (15392, 25886), (15652, 25456), (16576, 24037), (17888, 22274), (19264, 20683)]