638671488

素因数分解:

$2^7\times 3^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{373}}^1$

素因数の和:424

約数の個数: 256

約数和(自身を含む): 2136288000

約数和(自身を除く): 1497616512

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 16, 21, 24, 26, 28, 32, 39, 42, 48, 49, 52, 56, 64, 78, 84, 91, 96, 98, 104, 112, 128, 147, 156, 168, 182, 192, 196, 208, 224, 273, 294, 312, 336, 343, 364, 373, 384, 392, 416, 448, 546, 588, 624, 637, 672, 686, 728, 746, 784, 832, 896, 1029, 1092, 1119, 1176, 1248, 1274, 1344, 1372, 1456, 1492, 1568, 1664, 1911, 2058, 2184, 2238, 2352, 2496, 2548, 2611, 2688, 2744, 2912, 2984, 3136, 3822, 4116, 4368, 4459, 4476, 4704, 4849, 4992, 5096, 5222, 5488, 5824, 5968, 6272, 7644, 7833, 8232, 8736, 8918, 8952, 9408, 9698, 10192, 10444, 10976, 11648, 11936, 13377, 14547, 15288, 15666, 16464, 17472, 17836, 17904, 18277, 18816, 19396, 20384, 20888, 21952, 23872, 26754, 29094, 30576, 31332, 32928, 33943, 34944, 35672, 35808, 36554, 38792, 40768, 41776, 43904, 47744, 53508, 54831, 58188, 61152, 62664, 65856, 67886, 71344, 71616, 73108, 77584, 81536, 83552, 101829, 107016, 109662, 116376, 122304, 125328, 127939, 131712, 135772, 142688, 143232, 146216, 155168, 167104, 203658, 214032, 219324, 232752, 237601, 244608, 250656, 255878, 271544, 285376, 292432, 310336, 334208, 383817, 407316, 428064, 438648, 465504, 475202, 501312, 511756, 543088, 570752, 584864, 620672, 712803, 767634, 814632, 856128, 877296, 931008, 950404, 1002624, 1023512, 1086176, 1169728, 1425606, 1535268, 1629264, 1663207, 1712256, 1754592, 1862016, 1900808, 2047024, 2172352, 2339456, 2851212, 3070536, 3258528, 3326414, 3509184, 3801616, 4094048, 4344704, 4989621, 5702424, 6141072, 6517056, 6652828, 7018368, 7603232, 8188096, 9979242, 11404848, 12282144, 13034112, 13305656, 15206464, 16376192, 19958484, 22809696, 24564288, 26611312, 30412928, 39916968, 45619392, 49128576, 53222624, 79833936, 91238784, 106445248, 159667872, 212890496, 319335744, 638671488]

約数ペア:

[(1, 638671488), (2, 319335744), (3, 212890496), (4, 159667872), (6, 106445248), (7, 91238784), (8, 79833936), (12, 53222624), (13, 49128576), (14, 45619392), (16, 39916968), (21, 30412928), (24, 26611312), (26, 24564288), (28, 22809696), (32, 19958484), (39, 16376192), (42, 15206464), (48, 13305656), (49, 13034112), (52, 12282144), (56, 11404848), (64, 9979242), (78, 8188096), (84, 7603232), (91, 7018368), (96, 6652828), (98, 6517056), (104, 6141072), (112, 5702424), (128, 4989621), (147, 4344704), (156, 4094048), (168, 3801616), (182, 3509184), (192, 3326414), (196, 3258528), (208, 3070536), (224, 2851212), (273, 2339456), (294, 2172352), (312, 2047024), (336, 1900808), (343, 1862016), (364, 1754592), (373, 1712256), (384, 1663207), (392, 1629264), (416, 1535268), (448, 1425606), (546, 1169728), (588, 1086176), (624, 1023512), (637, 1002624), (672, 950404), (686, 931008), (728, 877296), (746, 856128), (784, 814632), (832, 767634), (896, 712803), (1029, 620672), (1092, 584864), (1119, 570752), (1176, 543088), (1248, 511756), (1274, 501312), (1344, 475202), (1372, 465504), (1456, 438648), (1492, 428064), (1568, 407316), (1664, 383817), (1911, 334208), (2058, 310336), (2184, 292432), (2238, 285376), (2352, 271544), (2496, 255878), (2548, 250656), (2611, 244608), (2688, 237601), (2744, 232752), (2912, 219324), (2984, 214032), (3136, 203658), (3822, 167104), (4116, 155168), (4368, 146216), (4459, 143232), (4476, 142688), (4704, 135772), (4849, 131712), (4992, 127939), (5096, 125328), (5222, 122304), (5488, 116376), (5824, 109662), (5968, 107016), (6272, 101829), (7644, 83552), (7833, 81536), (8232, 77584), (8736, 73108), (8918, 71616), (8952, 71344), (9408, 67886), (9698, 65856), (10192, 62664), (10444, 61152), (10976, 58188), (11648, 54831), (11936, 53508), (13377, 47744), (14547, 43904), (15288, 41776), (15666, 40768), (16464, 38792), (17472, 36554), (17836, 35808), (17904, 35672), (18277, 34944), (18816, 33943), (19396, 32928), (20384, 31332), (20888, 30576), (21952, 29094), (23872, 26754)]