640861920

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{557}}^1$

素因数の和:642

約数の個数: 288

約数和(自身を含む): 2369098368

約数和(自身を除く): 1728236448

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 30, 32, 34, 36, 40, 45, 47, 48, 51, 60, 68, 72, 80, 85, 90, 94, 96, 102, 120, 136, 141, 144, 153, 160, 170, 180, 188, 204, 235, 240, 255, 272, 282, 288, 306, 340, 360, 376, 408, 423, 470, 480, 510, 544, 557, 564, 612, 680, 705, 720, 752, 765, 799, 816, 846, 940, 1020, 1114, 1128, 1224, 1360, 1410, 1440, 1504, 1530, 1598, 1632, 1671, 1692, 1880, 2040, 2115, 2228, 2256, 2397, 2448, 2720, 2785, 2820, 3060, 3196, 3342, 3384, 3760, 3995, 4080, 4230, 4456, 4512, 4794, 4896, 5013, 5570, 5640, 6120, 6392, 6684, 6768, 7191, 7520, 7990, 8160, 8355, 8460, 8912, 9469, 9588, 10026, 11140, 11280, 11985, 12240, 12784, 13368, 13536, 14382, 15980, 16710, 16920, 17824, 18938, 19176, 20052, 22280, 22560, 23970, 24480, 25065, 25568, 26179, 26736, 28407, 28764, 31960, 33420, 33840, 35955, 37876, 38352, 40104, 44560, 47345, 47940, 50130, 52358, 53472, 56814, 57528, 63920, 66840, 67680, 71910, 75752, 76704, 78537, 80208, 85221, 89120, 94690, 95880, 100260, 104716, 113628, 115056, 127840, 130895, 133680, 142035, 143820, 151504, 157074, 160416, 170442, 189380, 191760, 200520, 209432, 227256, 230112, 235611, 261790, 267360, 284070, 287640, 303008, 314148, 340884, 378760, 383520, 392685, 401040, 418864, 426105, 445043, 454512, 471222, 523580, 568140, 575280, 628296, 681768, 757520, 785370, 802080, 837728, 852210, 890086, 909024, 942444, 1047160, 1136280, 1150560, 1178055, 1256592, 1335129, 1363536, 1515040, 1570740, 1704420, 1780172, 1884888, 2094320, 2225215, 2272560, 2356110, 2513184, 2670258, 2727072, 3141480, 3408840, 3560344, 3769776, 4005387, 4188640, 4450430, 4545120, 4712220, 5340516, 6282960, 6675645, 6817680, 7120688, 7539552, 8010774, 8900860, 9424440, 10681032, 12565920, 13351290, 13635360, 14241376, 16021548, 17801720, 18848880, 20026935, 21362064, 26702580, 32043096, 35603440, 37697760, 40053870, 42724128, 53405160, 64086192, 71206880, 80107740, 106810320, 128172384, 160215480, 213620640, 320430960, 640861920]

約数ペア:

[(1, 640861920), (2, 320430960), (3, 213620640), (4, 160215480), (5, 128172384), (6, 106810320), (8, 80107740), (9, 71206880), (10, 64086192), (12, 53405160), (15, 42724128), (16, 40053870), (17, 37697760), (18, 35603440), (20, 32043096), (24, 26702580), (30, 21362064), (32, 20026935), (34, 18848880), (36, 17801720), (40, 16021548), (45, 14241376), (47, 13635360), (48, 13351290), (51, 12565920), (60, 10681032), (68, 9424440), (72, 8900860), (80, 8010774), (85, 7539552), (90, 7120688), (94, 6817680), (96, 6675645), (102, 6282960), (120, 5340516), (136, 4712220), (141, 4545120), (144, 4450430), (153, 4188640), (160, 4005387), (170, 3769776), (180, 3560344), (188, 3408840), (204, 3141480), (235, 2727072), (240, 2670258), (255, 2513184), (272, 2356110), (282, 2272560), (288, 2225215), (306, 2094320), (340, 1884888), (360, 1780172), (376, 1704420), (408, 1570740), (423, 1515040), (470, 1363536), (480, 1335129), (510, 1256592), (544, 1178055), (557, 1150560), (564, 1136280), (612, 1047160), (680, 942444), (705, 909024), (720, 890086), (752, 852210), (765, 837728), (799, 802080), (816, 785370), (846, 757520), (940, 681768), (1020, 628296), (1114, 575280), (1128, 568140), (1224, 523580), (1360, 471222), (1410, 454512), (1440, 445043), (1504, 426105), (1530, 418864), (1598, 401040), (1632, 392685), (1671, 383520), (1692, 378760), (1880, 340884), (2040, 314148), (2115, 303008), (2228, 287640), (2256, 284070), (2397, 267360), (2448, 261790), (2720, 235611), (2785, 230112), (2820, 227256), (3060, 209432), (3196, 200520), (3342, 191760), (3384, 189380), (3760, 170442), (3995, 160416), (4080, 157074), (4230, 151504), (4456, 143820), (4512, 142035), (4794, 133680), (4896, 130895), (5013, 127840), (5570, 115056), (5640, 113628), (6120, 104716), (6392, 100260), (6684, 95880), (6768, 94690), (7191, 89120), (7520, 85221), (7990, 80208), (8160, 78537), (8355, 76704), (8460, 75752), (8912, 71910), (9469, 67680), (9588, 66840), (10026, 63920), (11140, 57528), (11280, 56814), (11985, 53472), (12240, 52358), (12784, 50130), (13368, 47940), (13536, 47345), (14382, 44560), (15980, 40104), (16710, 38352), (16920, 37876), (17824, 35955), (18938, 33840), (19176, 33420), (20052, 31960), (22280, 28764), (22560, 28407), (23970, 26736), (24480, 26179), (25065, 25568)]