257703992

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{601}}^1$

素因数の和:677

約数の個数: 128

約数和(自身を含む): 647270400

約数和(自身を除く): 389566408

約数列:

[1, 2, 4, 7, 8, 13, 14, 19, 26, 28, 31, 38, 52, 56, 62, 76, 91, 104, 124, 133, 152, 182, 217, 247, 248, 266, 364, 403, 434, 494, 532, 589, 601, 728, 806, 868, 988, 1064, 1178, 1202, 1612, 1729, 1736, 1976, 2356, 2404, 2821, 3224, 3458, 4123, 4207, 4712, 4808, 5642, 6916, 7657, 7813, 8246, 8414, 11284, 11419, 13832, 15314, 15626, 16492, 16828, 18631, 22568, 22838, 30628, 31252, 32984, 33656, 37262, 45676, 53599, 54691, 61256, 62504, 74524, 79933, 91352, 107198, 109382, 130417, 148447, 149048, 159866, 214396, 218764, 242203, 260834, 296894, 319732, 353989, 428792, 437528, 484406, 521668, 593788, 639464, 707978, 968812, 1039129, 1043336, 1187576, 1415956, 1695421, 1937624, 2078258, 2477923, 2831912, 3390842, 4156516, 4601857, 4955846, 6781684, 8313032, 9203714, 9911692, 13563368, 18407428, 19823384, 32212999, 36814856, 64425998, 128851996, 257703992]

約数ペア:

[(1, 257703992), (2, 128851996), (4, 64425998), (7, 36814856), (8, 32212999), (13, 19823384), (14, 18407428), (19, 13563368), (26, 9911692), (28, 9203714), (31, 8313032), (38, 6781684), (52, 4955846), (56, 4601857), (62, 4156516), (76, 3390842), (91, 2831912), (104, 2477923), (124, 2078258), (133, 1937624), (152, 1695421), (182, 1415956), (217, 1187576), (247, 1043336), (248, 1039129), (266, 968812), (364, 707978), (403, 639464), (434, 593788), (494, 521668), (532, 484406), (589, 437528), (601, 428792), (728, 353989), (806, 319732), (868, 296894), (988, 260834), (1064, 242203), (1178, 218764), (1202, 214396), (1612, 159866), (1729, 149048), (1736, 148447), (1976, 130417), (2356, 109382), (2404, 107198), (2821, 91352), (3224, 79933), (3458, 74524), (4123, 62504), (4207, 61256), (4712, 54691), (4808, 53599), (5642, 45676), (6916, 37262), (7657, 33656), (7813, 32984), (8246, 31252), (8414, 30628), (11284, 22838), (11419, 22568), (13832, 18631), (15314, 16828), (15626, 16492)]