640851840

素因数分解:

$2^7\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1$

素因数の和:190

約数の個数: 384

約数和(自身を含む): 2370251520

約数和(自身を除く): 1729399680

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 31, 32, 36, 37, 40, 45, 48, 60, 62, 64, 72, 74, 80, 90, 93, 96, 97, 111, 120, 124, 128, 144, 148, 155, 160, 180, 185, 186, 192, 194, 222, 240, 248, 279, 288, 291, 296, 310, 320, 333, 360, 370, 372, 384, 388, 444, 465, 480, 485, 496, 555, 558, 576, 582, 592, 620, 640, 666, 720, 740, 744, 776, 873, 888, 930, 960, 970, 992, 1110, 1116, 1147, 1152, 1164, 1184, 1240, 1332, 1395, 1440, 1455, 1480, 1488, 1552, 1665, 1746, 1776, 1860, 1920, 1940, 1984, 2220, 2232, 2294, 2328, 2368, 2480, 2664, 2790, 2880, 2910, 2960, 2976, 3007, 3104, 3330, 3441, 3492, 3552, 3589, 3720, 3880, 3968, 4365, 4440, 4464, 4588, 4656, 4736, 4960, 5328, 5580, 5735, 5760, 5820, 5920, 5952, 6014, 6208, 6660, 6882, 6984, 7104, 7178, 7440, 7760, 8730, 8880, 8928, 9021, 9176, 9312, 9920, 10323, 10656, 10767, 11160, 11470, 11640, 11840, 11904, 12028, 12416, 13320, 13764, 13968, 14208, 14356, 14880, 15035, 15520, 17205, 17460, 17760, 17856, 17945, 18042, 18352, 18624, 19840, 20646, 21312, 21534, 22320, 22940, 23280, 23680, 24056, 26640, 27063, 27528, 27936, 28712, 29760, 30070, 31040, 32301, 34410, 34920, 35520, 35712, 35890, 36084, 36704, 37248, 41292, 42624, 43068, 44640, 45105, 45880, 46560, 48112, 51615, 53280, 53835, 54126, 55056, 55872, 57424, 59520, 60140, 62080, 64602, 68820, 69840, 71040, 71780, 72168, 73408, 82584, 86136, 89280, 90210, 91760, 93120, 96224, 103230, 106560, 107670, 108252, 110112, 111259, 111744, 114848, 120280, 129204, 135315, 137640, 139680, 143560, 144336, 146816, 161505, 165168, 172272, 178560, 180420, 183520, 186240, 192448, 206460, 213120, 215340, 216504, 220224, 222518, 229696, 240560, 258408, 270630, 275280, 279360, 287120, 288672, 323010, 330336, 333777, 344544, 360840, 367040, 384896, 412920, 430680, 433008, 440448, 445036, 459392, 481120, 516816, 541260, 550560, 556295, 558720, 574240, 577344, 646020, 660672, 667554, 689088, 721680, 734080, 825840, 861360, 866016, 890072, 962240, 1001331, 1033632, 1082520, 1101120, 1112590, 1148480, 1154688, 1292040, 1321344, 1335108, 1378176, 1443360, 1651680, 1668885, 1722720, 1732032, 1780144, 1924480, 2002662, 2067264, 2165040, 2202240, 2225180, 2296960, 2584080, 2670216, 2886720, 3303360, 3337770, 3445440, 3464064, 3560288, 4005324, 4134528, 4330080, 4450360, 5006655, 5168160, 5340432, 5773440, 6606720, 6675540, 6890880, 7120576, 8010648, 8660160, 8900720, 10013310, 10336320, 10680864, 13351080, 14241152, 16021296, 17320320, 17801440, 20026620, 20672640, 21361728, 26702160, 32042592, 35602880, 40053240, 42723456, 53404320, 64085184, 71205760, 80106480, 106808640, 128170368, 160212960, 213617280, 320425920, 640851840]

約数ペア:

[(1, 640851840), (2, 320425920), (3, 213617280), (4, 160212960), (5, 128170368), (6, 106808640), (8, 80106480), (9, 71205760), (10, 64085184), (12, 53404320), (15, 42723456), (16, 40053240), (18, 35602880), (20, 32042592), (24, 26702160), (30, 21361728), (31, 20672640), (32, 20026620), (36, 17801440), (37, 17320320), (40, 16021296), (45, 14241152), (48, 13351080), (60, 10680864), (62, 10336320), (64, 10013310), (72, 8900720), (74, 8660160), (80, 8010648), (90, 7120576), (93, 6890880), (96, 6675540), (97, 6606720), (111, 5773440), (120, 5340432), (124, 5168160), (128, 5006655), (144, 4450360), (148, 4330080), (155, 4134528), (160, 4005324), (180, 3560288), (185, 3464064), (186, 3445440), (192, 3337770), (194, 3303360), (222, 2886720), (240, 2670216), (248, 2584080), (279, 2296960), (288, 2225180), (291, 2202240), (296, 2165040), (310, 2067264), (320, 2002662), (333, 1924480), (360, 1780144), (370, 1732032), (372, 1722720), (384, 1668885), (388, 1651680), (444, 1443360), (465, 1378176), (480, 1335108), (485, 1321344), (496, 1292040), (555, 1154688), (558, 1148480), (576, 1112590), (582, 1101120), (592, 1082520), (620, 1033632), (640, 1001331), (666, 962240), (720, 890072), (740, 866016), (744, 861360), (776, 825840), (873, 734080), (888, 721680), (930, 689088), (960, 667554), (970, 660672), (992, 646020), (1110, 577344), (1116, 574240), (1147, 558720), (1152, 556295), (1164, 550560), (1184, 541260), (1240, 516816), (1332, 481120), (1395, 459392), (1440, 445036), (1455, 440448), (1480, 433008), (1488, 430680), (1552, 412920), (1665, 384896), (1746, 367040), (1776, 360840), (1860, 344544), (1920, 333777), (1940, 330336), (1984, 323010), (2220, 288672), (2232, 287120), (2294, 279360), (2328, 275280), (2368, 270630), (2480, 258408), (2664, 240560), (2790, 229696), (2880, 222518), (2910, 220224), (2960, 216504), (2976, 215340), (3007, 213120), (3104, 206460), (3330, 192448), (3441, 186240), (3492, 183520), (3552, 180420), (3589, 178560), (3720, 172272), (3880, 165168), (3968, 161505), (4365, 146816), (4440, 144336), (4464, 143560), (4588, 139680), (4656, 137640), (4736, 135315), (4960, 129204), (5328, 120280), (5580, 114848), (5735, 111744), (5760, 111259), (5820, 110112), (5920, 108252), (5952, 107670), (6014, 106560), (6208, 103230), (6660, 96224), (6882, 93120), (6984, 91760), (7104, 90210), (7178, 89280), (7440, 86136), (7760, 82584), (8730, 73408), (8880, 72168), (8928, 71780), (9021, 71040), (9176, 69840), (9312, 68820), (9920, 64602), (10323, 62080), (10656, 60140), (10767, 59520), (11160, 57424), (11470, 55872), (11640, 55056), (11840, 54126), (11904, 53835), (12028, 53280), (12416, 51615), (13320, 48112), (13764, 46560), (13968, 45880), (14208, 45105), (14356, 44640), (14880, 43068), (15035, 42624), (15520, 41292), (17205, 37248), (17460, 36704), (17760, 36084), (17856, 35890), (17945, 35712), (18042, 35520), (18352, 34920), (18624, 34410), (19840, 32301), (20646, 31040), (21312, 30070), (21534, 29760), (22320, 28712), (22940, 27936), (23280, 27528), (23680, 27063), (24056, 26640)]