257195120

素因数分解:

$2^4\times 5^1\times 7^4\times {\mathrm{13}}^1\times {\mathrm{103}}^1$

素因数の和:157

約数の個数: 200

約数和(自身を含む): 758555616

約数和(自身を除く): 501360496

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 49, 52, 56, 65, 70, 80, 91, 98, 103, 104, 112, 130, 140, 182, 196, 206, 208, 245, 260, 280, 343, 364, 392, 412, 455, 490, 515, 520, 560, 637, 686, 721, 728, 784, 824, 910, 980, 1030, 1040, 1274, 1339, 1372, 1442, 1456, 1648, 1715, 1820, 1960, 2060, 2401, 2548, 2678, 2744, 2884, 3185, 3430, 3605, 3640, 3920, 4120, 4459, 4802, 5047, 5096, 5356, 5488, 5768, 6370, 6695, 6860, 7210, 7280, 8240, 8918, 9373, 9604, 10094, 10192, 10712, 11536, 12005, 12740, 13390, 13720, 14420, 17836, 18746, 19208, 20188, 21424, 22295, 24010, 25235, 25480, 26780, 27440, 28840, 31213, 35329, 35672, 37492, 38416, 40376, 44590, 46865, 48020, 50470, 50960, 53560, 57680, 62426, 65611, 70658, 71344, 74984, 80752, 89180, 93730, 96040, 100940, 107120, 124852, 131222, 141316, 149968, 156065, 176645, 178360, 187460, 192080, 201880, 247303, 249704, 262444, 282632, 312130, 328055, 353290, 356720, 374920, 403760, 459277, 494606, 499408, 524888, 565264, 624260, 656110, 706580, 749840, 918554, 989212, 1049776, 1236515, 1248520, 1312220, 1413160, 1837108, 1978424, 2296385, 2473030, 2497040, 2624440, 2826320, 3214939, 3674216, 3956848, 4592770, 4946060, 5248880, 6429878, 7348432, 9185540, 9892120, 12859756, 16074695, 18371080, 19784240, 25719512, 32149390, 36742160, 51439024, 64298780, 128597560, 257195120]

約数ペア:

[(1, 257195120), (2, 128597560), (4, 64298780), (5, 51439024), (7, 36742160), (8, 32149390), (10, 25719512), (13, 19784240), (14, 18371080), (16, 16074695), (20, 12859756), (26, 9892120), (28, 9185540), (35, 7348432), (40, 6429878), (49, 5248880), (52, 4946060), (56, 4592770), (65, 3956848), (70, 3674216), (80, 3214939), (91, 2826320), (98, 2624440), (103, 2497040), (104, 2473030), (112, 2296385), (130, 1978424), (140, 1837108), (182, 1413160), (196, 1312220), (206, 1248520), (208, 1236515), (245, 1049776), (260, 989212), (280, 918554), (343, 749840), (364, 706580), (392, 656110), (412, 624260), (455, 565264), (490, 524888), (515, 499408), (520, 494606), (560, 459277), (637, 403760), (686, 374920), (721, 356720), (728, 353290), (784, 328055), (824, 312130), (910, 282632), (980, 262444), (1030, 249704), (1040, 247303), (1274, 201880), (1339, 192080), (1372, 187460), (1442, 178360), (1456, 176645), (1648, 156065), (1715, 149968), (1820, 141316), (1960, 131222), (2060, 124852), (2401, 107120), (2548, 100940), (2678, 96040), (2744, 93730), (2884, 89180), (3185, 80752), (3430, 74984), (3605, 71344), (3640, 70658), (3920, 65611), (4120, 62426), (4459, 57680), (4802, 53560), (5047, 50960), (5096, 50470), (5356, 48020), (5488, 46865), (5768, 44590), (6370, 40376), (6695, 38416), (6860, 37492), (7210, 35672), (7280, 35329), (8240, 31213), (8918, 28840), (9373, 27440), (9604, 26780), (10094, 25480), (10192, 25235), (10712, 24010), (11536, 22295), (12005, 21424), (12740, 20188), (13390, 19208), (13720, 18746), (14420, 17836)]