256563456

素因数分解:

$2^8\times 3^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{457}}^1$

素因数の和:536

約数の個数: 144

約数和(自身を含む): 741432384

約数和(自身を除く): 484868928

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 17, 24, 32, 34, 43, 48, 51, 64, 68, 86, 96, 102, 128, 129, 136, 172, 192, 204, 256, 258, 272, 344, 384, 408, 457, 516, 544, 688, 731, 768, 816, 914, 1032, 1088, 1371, 1376, 1462, 1632, 1828, 2064, 2176, 2193, 2742, 2752, 2924, 3264, 3656, 4128, 4352, 4386, 5484, 5504, 5848, 6528, 7312, 7769, 8256, 8772, 10968, 11008, 11696, 13056, 14624, 15538, 16512, 17544, 19651, 21936, 23307, 23392, 29248, 31076, 33024, 35088, 39302, 43872, 46614, 46784, 58496, 58953, 62152, 70176, 78604, 87744, 93228, 93568, 116992, 117906, 124304, 140352, 157208, 175488, 186456, 187136, 235812, 248608, 280704, 314416, 334067, 350976, 372912, 471624, 497216, 561408, 628832, 668134, 745824, 943248, 994432, 1002201, 1257664, 1336268, 1491648, 1886496, 1988864, 2004402, 2515328, 2672536, 2983296, 3772992, 4008804, 5030656, 5345072, 5966592, 7545984, 8017608, 10690144, 15091968, 16035216, 21380288, 32070432, 42760576, 64140864, 85521152, 128281728, 256563456]

約数ペア:

[(1, 256563456), (2, 128281728), (3, 85521152), (4, 64140864), (6, 42760576), (8, 32070432), (12, 21380288), (16, 16035216), (17, 15091968), (24, 10690144), (32, 8017608), (34, 7545984), (43, 5966592), (48, 5345072), (51, 5030656), (64, 4008804), (68, 3772992), (86, 2983296), (96, 2672536), (102, 2515328), (128, 2004402), (129, 1988864), (136, 1886496), (172, 1491648), (192, 1336268), (204, 1257664), (256, 1002201), (258, 994432), (272, 943248), (344, 745824), (384, 668134), (408, 628832), (457, 561408), (516, 497216), (544, 471624), (688, 372912), (731, 350976), (768, 334067), (816, 314416), (914, 280704), (1032, 248608), (1088, 235812), (1371, 187136), (1376, 186456), (1462, 175488), (1632, 157208), (1828, 140352), (2064, 124304), (2176, 117906), (2193, 116992), (2742, 93568), (2752, 93228), (2924, 87744), (3264, 78604), (3656, 70176), (4128, 62152), (4352, 58953), (4386, 58496), (5484, 46784), (5504, 46614), (5848, 43872), (6528, 39302), (7312, 35088), (7769, 33024), (8256, 31076), (8772, 29248), (10968, 23392), (11008, 23307), (11696, 21936), (13056, 19651), (14624, 17544), (15538, 16512)]