281400392

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{337}}^1$

素因数の和:431

約数の個数: 128

約数和(自身を含む): 690493440

約数和(自身を除く): 409093048

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 31, 37, 52, 56, 62, 74, 91, 104, 124, 148, 182, 217, 248, 259, 296, 337, 364, 403, 434, 481, 518, 674, 728, 806, 868, 962, 1036, 1147, 1348, 1612, 1736, 1924, 2072, 2294, 2359, 2696, 2821, 3224, 3367, 3848, 4381, 4588, 4718, 5642, 6734, 8029, 8762, 9176, 9436, 10447, 11284, 12469, 13468, 14911, 16058, 17524, 18872, 20894, 22568, 24938, 26936, 29822, 30667, 32116, 35048, 41788, 49876, 59644, 61334, 64232, 73129, 83576, 87283, 99752, 104377, 119288, 122668, 135811, 146258, 162097, 174566, 208754, 245336, 271622, 292516, 324194, 349132, 386539, 417508, 543244, 585032, 648388, 698264, 773078, 835016, 950677, 1086488, 1134679, 1296776, 1546156, 1901354, 2269358, 2705773, 3092312, 3802708, 4538716, 5025007, 5411546, 7605416, 9077432, 10050014, 10823092, 20100028, 21646184, 35175049, 40200056, 70350098, 140700196, 281400392]

約数ペア:

[(1, 281400392), (2, 140700196), (4, 70350098), (7, 40200056), (8, 35175049), (13, 21646184), (14, 20100028), (26, 10823092), (28, 10050014), (31, 9077432), (37, 7605416), (52, 5411546), (56, 5025007), (62, 4538716), (74, 3802708), (91, 3092312), (104, 2705773), (124, 2269358), (148, 1901354), (182, 1546156), (217, 1296776), (248, 1134679), (259, 1086488), (296, 950677), (337, 835016), (364, 773078), (403, 698264), (434, 648388), (481, 585032), (518, 543244), (674, 417508), (728, 386539), (806, 349132), (868, 324194), (962, 292516), (1036, 271622), (1147, 245336), (1348, 208754), (1612, 174566), (1736, 162097), (1924, 146258), (2072, 135811), (2294, 122668), (2359, 119288), (2696, 104377), (2821, 99752), (3224, 87283), (3367, 83576), (3848, 73129), (4381, 64232), (4588, 61334), (4718, 59644), (5642, 49876), (6734, 41788), (8029, 35048), (8762, 32116), (9176, 30667), (9436, 29822), (10447, 26936), (11284, 24938), (12469, 22568), (13468, 20894), (14911, 18872), (16058, 17524)]