257519976

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1\times {\mathrm{251}}^1$

素因数の和:495

約数の個数: 128

約数和(自身を含む): 766402560

約数和(自身を除く): 508882584

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 31, 42, 56, 62, 84, 93, 124, 168, 186, 197, 217, 248, 251, 372, 394, 434, 502, 591, 651, 744, 753, 788, 868, 1004, 1182, 1302, 1379, 1506, 1576, 1736, 1757, 2008, 2364, 2604, 2758, 3012, 3514, 4137, 4728, 5208, 5271, 5516, 6024, 6107, 7028, 7781, 8274, 10542, 11032, 12214, 14056, 15562, 16548, 18321, 21084, 23343, 24428, 31124, 33096, 36642, 42168, 42749, 46686, 48856, 49447, 54467, 62248, 73284, 85498, 93372, 98894, 108934, 128247, 146568, 148341, 163401, 170996, 186744, 197788, 217868, 256494, 296682, 326802, 341992, 346129, 395576, 435736, 512988, 593364, 653604, 692258, 1025976, 1038387, 1186728, 1307208, 1384516, 1532857, 2076774, 2769032, 3065714, 4153548, 4598571, 6131428, 8307096, 9197142, 10729999, 12262856, 18394284, 21459998, 32189997, 36788568, 42919996, 64379994, 85839992, 128759988, 257519976]

約数ペア:

[(1, 257519976), (2, 128759988), (3, 85839992), (4, 64379994), (6, 42919996), (7, 36788568), (8, 32189997), (12, 21459998), (14, 18394284), (21, 12262856), (24, 10729999), (28, 9197142), (31, 8307096), (42, 6131428), (56, 4598571), (62, 4153548), (84, 3065714), (93, 2769032), (124, 2076774), (168, 1532857), (186, 1384516), (197, 1307208), (217, 1186728), (248, 1038387), (251, 1025976), (372, 692258), (394, 653604), (434, 593364), (502, 512988), (591, 435736), (651, 395576), (744, 346129), (753, 341992), (788, 326802), (868, 296682), (1004, 256494), (1182, 217868), (1302, 197788), (1379, 186744), (1506, 170996), (1576, 163401), (1736, 148341), (1757, 146568), (2008, 128247), (2364, 108934), (2604, 98894), (2758, 93372), (3012, 85498), (3514, 73284), (4137, 62248), (4728, 54467), (5208, 49447), (5271, 48856), (5516, 46686), (6024, 42749), (6107, 42168), (7028, 36642), (7781, 33096), (8274, 31124), (10542, 24428), (11032, 23343), (12214, 21084), (14056, 18321), (15562, 16548)]