257719616

素因数分解:

$2^6\times 7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{241}}^1$

素因数の和:309

約数の個数: 168

約数和(自身を含む): 672705792

約数和(自身を除く): 414986176

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 31, 32, 44, 49, 56, 62, 64, 77, 88, 98, 112, 124, 154, 176, 196, 217, 224, 241, 248, 308, 341, 352, 392, 434, 448, 482, 496, 539, 616, 682, 704, 784, 868, 964, 992, 1078, 1232, 1364, 1519, 1568, 1687, 1736, 1928, 1984, 2156, 2387, 2464, 2651, 2728, 3038, 3136, 3374, 3472, 3856, 4312, 4774, 4928, 5302, 5456, 6076, 6748, 6944, 7471, 7712, 8624, 9548, 10604, 10912, 11809, 12152, 13496, 13888, 14942, 15424, 16709, 17248, 18557, 19096, 21208, 21824, 23618, 24304, 26992, 29884, 33418, 34496, 37114, 38192, 42416, 47236, 48608, 52297, 53984, 59768, 66836, 74228, 76384, 82181, 84832, 94472, 97216, 104594, 107968, 119536, 129899, 133672, 148456, 152768, 164362, 169664, 188944, 209188, 239072, 259798, 267344, 296912, 328724, 366079, 377888, 418376, 478144, 519596, 534688, 575267, 593824, 657448, 732158, 755776, 836752, 1039192, 1069376, 1150534, 1187648, 1314896, 1464316, 1673504, 2078384, 2301068, 2629792, 2928632, 3347008, 4026869, 4156768, 4602136, 5259584, 5857264, 8053738, 8313536, 9204272, 11714528, 16107476, 18408544, 23429056, 32214952, 36817088, 64429904, 128859808, 257719616]

約数ペア:

[(1, 257719616), (2, 128859808), (4, 64429904), (7, 36817088), (8, 32214952), (11, 23429056), (14, 18408544), (16, 16107476), (22, 11714528), (28, 9204272), (31, 8313536), (32, 8053738), (44, 5857264), (49, 5259584), (56, 4602136), (62, 4156768), (64, 4026869), (77, 3347008), (88, 2928632), (98, 2629792), (112, 2301068), (124, 2078384), (154, 1673504), (176, 1464316), (196, 1314896), (217, 1187648), (224, 1150534), (241, 1069376), (248, 1039192), (308, 836752), (341, 755776), (352, 732158), (392, 657448), (434, 593824), (448, 575267), (482, 534688), (496, 519596), (539, 478144), (616, 418376), (682, 377888), (704, 366079), (784, 328724), (868, 296912), (964, 267344), (992, 259798), (1078, 239072), (1232, 209188), (1364, 188944), (1519, 169664), (1568, 164362), (1687, 152768), (1736, 148456), (1928, 133672), (1984, 129899), (2156, 119536), (2387, 107968), (2464, 104594), (2651, 97216), (2728, 94472), (3038, 84832), (3136, 82181), (3374, 76384), (3472, 74228), (3856, 66836), (4312, 59768), (4774, 53984), (4928, 52297), (5302, 48608), (5456, 47236), (6076, 42416), (6748, 38192), (6944, 37114), (7471, 34496), (7712, 33418), (8624, 29884), (9548, 26992), (10604, 24304), (10912, 23618), (11809, 21824), (12152, 21208), (13496, 19096), (13888, 18557), (14942, 17248), (15424, 16709)]