640811808

素因数分解:

$2^5\times 3^2\times 7^3\times {\mathrm{13}}^1\times {\mathrm{499}}^1$

素因数の和:549

約数の個数: 288

約数和(自身を含む): 2293200000

約数和(自身を除く): 1652388192

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 13, 14, 16, 18, 21, 24, 26, 28, 32, 36, 39, 42, 48, 49, 52, 56, 63, 72, 78, 84, 91, 96, 98, 104, 112, 117, 126, 144, 147, 156, 168, 182, 196, 208, 224, 234, 252, 273, 288, 294, 312, 336, 343, 364, 392, 416, 441, 468, 499, 504, 546, 588, 624, 637, 672, 686, 728, 784, 819, 882, 936, 998, 1008, 1029, 1092, 1176, 1248, 1274, 1372, 1456, 1497, 1568, 1638, 1764, 1872, 1911, 1996, 2016, 2058, 2184, 2352, 2548, 2744, 2912, 2994, 3087, 3276, 3493, 3528, 3744, 3822, 3992, 4116, 4368, 4459, 4491, 4704, 5096, 5488, 5733, 5988, 6174, 6487, 6552, 6986, 7056, 7644, 7984, 8232, 8736, 8918, 8982, 10192, 10479, 10976, 11466, 11976, 12348, 12974, 13104, 13377, 13972, 14112, 15288, 15968, 16464, 17836, 17964, 19461, 20384, 20958, 22932, 23952, 24451, 24696, 25948, 26208, 26754, 27944, 30576, 31437, 32928, 35672, 35928, 38922, 40131, 41916, 45409, 45864, 47904, 48902, 49392, 51896, 53508, 55888, 58383, 61152, 62874, 71344, 71856, 73353, 77844, 80262, 83832, 90818, 91728, 97804, 98784, 103792, 107016, 111776, 116766, 125748, 136227, 142688, 143712, 146706, 155688, 160524, 167664, 171157, 181636, 183456, 195608, 207584, 214032, 220059, 233532, 251496, 272454, 293412, 311376, 317863, 321048, 335328, 342314, 363272, 391216, 408681, 428064, 440118, 467064, 502992, 513471, 544908, 586824, 622752, 635726, 642096, 684628, 726544, 782432, 817362, 880236, 934128, 953589, 1005984, 1026942, 1089816, 1173648, 1271452, 1284192, 1369256, 1453088, 1540413, 1634724, 1760472, 1868256, 1907178, 2053884, 2179632, 2225041, 2347296, 2542904, 2738512, 2860767, 3080826, 3269448, 3520944, 3814356, 4107768, 4359264, 4450082, 5085808, 5477024, 5721534, 6161652, 6538896, 6675123, 7041888, 7628712, 8215536, 8900164, 10171616, 11443068, 12323304, 13077792, 13350246, 15257424, 16431072, 17800328, 20025369, 22886136, 24646608, 26700492, 30514848, 35600656, 40050738, 45772272, 49293216, 53400984, 71201312, 80101476, 91544544, 106801968, 160202952, 213603936, 320405904, 640811808]

約数ペア:

[(1, 640811808), (2, 320405904), (3, 213603936), (4, 160202952), (6, 106801968), (7, 91544544), (8, 80101476), (9, 71201312), (12, 53400984), (13, 49293216), (14, 45772272), (16, 40050738), (18, 35600656), (21, 30514848), (24, 26700492), (26, 24646608), (28, 22886136), (32, 20025369), (36, 17800328), (39, 16431072), (42, 15257424), (48, 13350246), (49, 13077792), (52, 12323304), (56, 11443068), (63, 10171616), (72, 8900164), (78, 8215536), (84, 7628712), (91, 7041888), (96, 6675123), (98, 6538896), (104, 6161652), (112, 5721534), (117, 5477024), (126, 5085808), (144, 4450082), (147, 4359264), (156, 4107768), (168, 3814356), (182, 3520944), (196, 3269448), (208, 3080826), (224, 2860767), (234, 2738512), (252, 2542904), (273, 2347296), (288, 2225041), (294, 2179632), (312, 2053884), (336, 1907178), (343, 1868256), (364, 1760472), (392, 1634724), (416, 1540413), (441, 1453088), (468, 1369256), (499, 1284192), (504, 1271452), (546, 1173648), (588, 1089816), (624, 1026942), (637, 1005984), (672, 953589), (686, 934128), (728, 880236), (784, 817362), (819, 782432), (882, 726544), (936, 684628), (998, 642096), (1008, 635726), (1029, 622752), (1092, 586824), (1176, 544908), (1248, 513471), (1274, 502992), (1372, 467064), (1456, 440118), (1497, 428064), (1568, 408681), (1638, 391216), (1764, 363272), (1872, 342314), (1911, 335328), (1996, 321048), (2016, 317863), (2058, 311376), (2184, 293412), (2352, 272454), (2548, 251496), (2744, 233532), (2912, 220059), (2994, 214032), (3087, 207584), (3276, 195608), (3493, 183456), (3528, 181636), (3744, 171157), (3822, 167664), (3992, 160524), (4116, 155688), (4368, 146706), (4459, 143712), (4491, 142688), (4704, 136227), (5096, 125748), (5488, 116766), (5733, 111776), (5988, 107016), (6174, 103792), (6487, 98784), (6552, 97804), (6986, 91728), (7056, 90818), (7644, 83832), (7984, 80262), (8232, 77844), (8736, 73353), (8918, 71856), (8982, 71344), (10192, 62874), (10479, 61152), (10976, 58383), (11466, 55888), (11976, 53508), (12348, 51896), (12974, 49392), (13104, 48902), (13377, 47904), (13972, 45864), (14112, 45409), (15288, 41916), (15968, 40131), (16464, 38922), (17836, 35928), (17964, 35672), (19461, 32928), (20384, 31437), (20958, 30576), (22932, 27944), (23952, 26754), (24451, 26208), (24696, 25948)]