256698720

素因数分解:

$2^5\times 3^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{683}}^1$

素因数の和:739

約数の個数: 240

約数和(自身を含む): 938543760

約数和(自身を除く): 681845040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 29, 30, 32, 36, 40, 45, 48, 54, 58, 60, 72, 80, 81, 87, 90, 96, 108, 116, 120, 135, 144, 145, 160, 162, 174, 180, 216, 232, 240, 261, 270, 288, 290, 324, 348, 360, 405, 432, 435, 464, 480, 522, 540, 580, 648, 683, 696, 720, 783, 810, 864, 870, 928, 1044, 1080, 1160, 1296, 1305, 1366, 1392, 1440, 1566, 1620, 1740, 2049, 2088, 2160, 2320, 2349, 2592, 2610, 2732, 2784, 3132, 3240, 3415, 3480, 3915, 4098, 4176, 4320, 4640, 4698, 5220, 5464, 6147, 6264, 6480, 6830, 6960, 7830, 8196, 8352, 9396, 10245, 10440, 10928, 11745, 12294, 12528, 12960, 13660, 13920, 15660, 16392, 18441, 18792, 19807, 20490, 20880, 21856, 23490, 24588, 25056, 27320, 30735, 31320, 32784, 36882, 37584, 39614, 40980, 41760, 46980, 49176, 54640, 55323, 59421, 61470, 62640, 65568, 73764, 75168, 79228, 81960, 92205, 93960, 98352, 99035, 109280, 110646, 118842, 122940, 125280, 147528, 158456, 163920, 178263, 184410, 187920, 196704, 198070, 221292, 237684, 245880, 276615, 295056, 297105, 316912, 327840, 356526, 368820, 375840, 396140, 442584, 475368, 491760, 534789, 553230, 590112, 594210, 633824, 713052, 737640, 792280, 885168, 891315, 950736, 983520, 1069578, 1106460, 1188420, 1426104, 1475280, 1584560, 1604367, 1770336, 1782630, 1901472, 2139156, 2212920, 2376840, 2673945, 2852208, 2950560, 3169120, 3208734, 3565260, 4278312, 4425840, 4753680, 5347890, 5704416, 6417468, 7130520, 8021835, 8556624, 8851680, 9507360, 10695780, 12834936, 14261040, 16043670, 17113248, 21391560, 25669872, 28522080, 32087340, 42783120, 51339744, 64174680, 85566240, 128349360, 256698720]

約数ペア:

[(1, 256698720), (2, 128349360), (3, 85566240), (4, 64174680), (5, 51339744), (6, 42783120), (8, 32087340), (9, 28522080), (10, 25669872), (12, 21391560), (15, 17113248), (16, 16043670), (18, 14261040), (20, 12834936), (24, 10695780), (27, 9507360), (29, 8851680), (30, 8556624), (32, 8021835), (36, 7130520), (40, 6417468), (45, 5704416), (48, 5347890), (54, 4753680), (58, 4425840), (60, 4278312), (72, 3565260), (80, 3208734), (81, 3169120), (87, 2950560), (90, 2852208), (96, 2673945), (108, 2376840), (116, 2212920), (120, 2139156), (135, 1901472), (144, 1782630), (145, 1770336), (160, 1604367), (162, 1584560), (174, 1475280), (180, 1426104), (216, 1188420), (232, 1106460), (240, 1069578), (261, 983520), (270, 950736), (288, 891315), (290, 885168), (324, 792280), (348, 737640), (360, 713052), (405, 633824), (432, 594210), (435, 590112), (464, 553230), (480, 534789), (522, 491760), (540, 475368), (580, 442584), (648, 396140), (683, 375840), (696, 368820), (720, 356526), (783, 327840), (810, 316912), (864, 297105), (870, 295056), (928, 276615), (1044, 245880), (1080, 237684), (1160, 221292), (1296, 198070), (1305, 196704), (1366, 187920), (1392, 184410), (1440, 178263), (1566, 163920), (1620, 158456), (1740, 147528), (2049, 125280), (2088, 122940), (2160, 118842), (2320, 110646), (2349, 109280), (2592, 99035), (2610, 98352), (2732, 93960), (2784, 92205), (3132, 81960), (3240, 79228), (3415, 75168), (3480, 73764), (3915, 65568), (4098, 62640), (4176, 61470), (4320, 59421), (4640, 55323), (4698, 54640), (5220, 49176), (5464, 46980), (6147, 41760), (6264, 40980), (6480, 39614), (6830, 37584), (6960, 36882), (7830, 32784), (8196, 31320), (8352, 30735), (9396, 27320), (10245, 25056), (10440, 24588), (10928, 23490), (11745, 21856), (12294, 20880), (12528, 20490), (12960, 19807), (13660, 18792), (13920, 18441), (15660, 16392)]