256166640

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{499}}^1$

素因数の和:572

約数の個数: 240

約数和(自身を含む): 928512000

約数和(自身を除く): 672345360

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 30, 31, 36, 40, 45, 46, 48, 60, 62, 69, 72, 80, 90, 92, 93, 115, 120, 124, 138, 144, 155, 180, 184, 186, 207, 230, 240, 248, 276, 279, 310, 345, 360, 368, 372, 414, 460, 465, 496, 499, 552, 558, 620, 690, 713, 720, 744, 828, 920, 930, 998, 1035, 1104, 1116, 1240, 1380, 1395, 1426, 1488, 1497, 1656, 1840, 1860, 1996, 2070, 2139, 2232, 2480, 2495, 2760, 2790, 2852, 2994, 3312, 3565, 3720, 3992, 4140, 4278, 4464, 4491, 4990, 5520, 5580, 5704, 5988, 6417, 7130, 7440, 7485, 7984, 8280, 8556, 8982, 9980, 10695, 11160, 11408, 11477, 11976, 12834, 14260, 14970, 15469, 16560, 17112, 17964, 19960, 21390, 22320, 22455, 22954, 23952, 25668, 28520, 29940, 30938, 32085, 34224, 34431, 35928, 39920, 42780, 44910, 45908, 46407, 51336, 57040, 57385, 59880, 61876, 64170, 68862, 71856, 77345, 85560, 89820, 91816, 92814, 102672, 103293, 114770, 119760, 123752, 128340, 137724, 139221, 154690, 171120, 172155, 179640, 183632, 185628, 206586, 229540, 232035, 247504, 256680, 275448, 278442, 309380, 344310, 355787, 359280, 371256, 413172, 459080, 464070, 513360, 516465, 550896, 556884, 618760, 688620, 696105, 711574, 742512, 826344, 918160, 928140, 1032930, 1067361, 1113768, 1237520, 1377240, 1392210, 1423148, 1652688, 1778935, 1856280, 2065860, 2134722, 2227536, 2754480, 2784420, 2846296, 3202083, 3557870, 3712560, 4131720, 4269444, 5336805, 5568840, 5692592, 6404166, 7115740, 8263440, 8538888, 10673610, 11137680, 12808332, 14231480, 16010415, 17077776, 21347220, 25616664, 28462960, 32020830, 42694440, 51233328, 64041660, 85388880, 128083320, 256166640]

約数ペア:

[(1, 256166640), (2, 128083320), (3, 85388880), (4, 64041660), (5, 51233328), (6, 42694440), (8, 32020830), (9, 28462960), (10, 25616664), (12, 21347220), (15, 17077776), (16, 16010415), (18, 14231480), (20, 12808332), (23, 11137680), (24, 10673610), (30, 8538888), (31, 8263440), (36, 7115740), (40, 6404166), (45, 5692592), (46, 5568840), (48, 5336805), (60, 4269444), (62, 4131720), (69, 3712560), (72, 3557870), (80, 3202083), (90, 2846296), (92, 2784420), (93, 2754480), (115, 2227536), (120, 2134722), (124, 2065860), (138, 1856280), (144, 1778935), (155, 1652688), (180, 1423148), (184, 1392210), (186, 1377240), (207, 1237520), (230, 1113768), (240, 1067361), (248, 1032930), (276, 928140), (279, 918160), (310, 826344), (345, 742512), (360, 711574), (368, 696105), (372, 688620), (414, 618760), (460, 556884), (465, 550896), (496, 516465), (499, 513360), (552, 464070), (558, 459080), (620, 413172), (690, 371256), (713, 359280), (720, 355787), (744, 344310), (828, 309380), (920, 278442), (930, 275448), (998, 256680), (1035, 247504), (1104, 232035), (1116, 229540), (1240, 206586), (1380, 185628), (1395, 183632), (1426, 179640), (1488, 172155), (1497, 171120), (1656, 154690), (1840, 139221), (1860, 137724), (1996, 128340), (2070, 123752), (2139, 119760), (2232, 114770), (2480, 103293), (2495, 102672), (2760, 92814), (2790, 91816), (2852, 89820), (2994, 85560), (3312, 77345), (3565, 71856), (3720, 68862), (3992, 64170), (4140, 61876), (4278, 59880), (4464, 57385), (4491, 57040), (4990, 51336), (5520, 46407), (5580, 45908), (5704, 44910), (5988, 42780), (6417, 39920), (7130, 35928), (7440, 34431), (7485, 34224), (7984, 32085), (8280, 30938), (8556, 29940), (8982, 28520), (9980, 25668), (10695, 23952), (11160, 22954), (11408, 22455), (11477, 22320), (11976, 21390), (12834, 19960), (14260, 17964), (14970, 17112), (15469, 16560)]