1280855520

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4099}}^1$

素因数の和:4158

約数の個数: 288

約数和(自身を含む): 5157734400

約数和(自身を除く): 3876878880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 31, 32, 35, 36, 40, 42, 45, 48, 56, 60, 62, 63, 70, 72, 80, 84, 90, 93, 96, 105, 112, 120, 124, 126, 140, 144, 155, 160, 168, 180, 186, 210, 217, 224, 240, 248, 252, 279, 280, 288, 310, 315, 336, 360, 372, 420, 434, 465, 480, 496, 504, 558, 560, 620, 630, 651, 672, 720, 744, 840, 868, 930, 992, 1008, 1085, 1116, 1120, 1240, 1260, 1302, 1395, 1440, 1488, 1680, 1736, 1860, 1953, 2016, 2170, 2232, 2480, 2520, 2604, 2790, 2976, 3255, 3360, 3472, 3720, 3906, 4099, 4340, 4464, 4960, 5040, 5208, 5580, 6510, 6944, 7440, 7812, 8198, 8680, 8928, 9765, 10080, 10416, 11160, 12297, 13020, 14880, 15624, 16396, 17360, 19530, 20495, 20832, 22320, 24594, 26040, 28693, 31248, 32792, 34720, 36891, 39060, 40990, 44640, 49188, 52080, 57386, 61485, 62496, 65584, 73782, 78120, 81980, 86079, 98376, 104160, 114772, 122970, 127069, 131168, 143465, 147564, 156240, 163960, 172158, 184455, 196752, 229544, 245940, 254138, 258237, 286930, 295128, 312480, 327920, 344316, 368910, 381207, 393504, 430395, 459088, 491880, 508276, 516474, 573860, 590256, 635345, 655840, 688632, 737820, 762414, 860790, 889483, 918176, 983760, 1016552, 1032948, 1143621, 1147720, 1180512, 1270690, 1291185, 1377264, 1475640, 1524828, 1721580, 1778966, 1906035, 1967520, 2033104, 2065896, 2287242, 2295440, 2541380, 2582370, 2668449, 2754528, 2951280, 3049656, 3443160, 3557932, 3812070, 4066208, 4131792, 4447415, 4574484, 4590880, 5082760, 5164740, 5336898, 5718105, 5902560, 6099312, 6886320, 7115864, 7624140, 8005347, 8263584, 8894830, 9148968, 10165520, 10329480, 10673796, 11436210, 12198624, 13342245, 13772640, 14231728, 15248280, 16010694, 17789660, 18297936, 20331040, 20658960, 21347592, 22872420, 26684490, 28463456, 30496560, 32021388, 35579320, 36595872, 40026735, 41317920, 42695184, 45744840, 53368980, 60993120, 64042776, 71158640, 80053470, 85390368, 91489680, 106737960, 128085552, 142317280, 160106940, 182979360, 213475920, 256171104, 320213880, 426951840, 640427760, 1280855520]

約数ペア:

[(1, 1280855520), (2, 640427760), (3, 426951840), (4, 320213880), (5, 256171104), (6, 213475920), (7, 182979360), (8, 160106940), (9, 142317280), (10, 128085552), (12, 106737960), (14, 91489680), (15, 85390368), (16, 80053470), (18, 71158640), (20, 64042776), (21, 60993120), (24, 53368980), (28, 45744840), (30, 42695184), (31, 41317920), (32, 40026735), (35, 36595872), (36, 35579320), (40, 32021388), (42, 30496560), (45, 28463456), (48, 26684490), (56, 22872420), (60, 21347592), (62, 20658960), (63, 20331040), (70, 18297936), (72, 17789660), (80, 16010694), (84, 15248280), (90, 14231728), (93, 13772640), (96, 13342245), (105, 12198624), (112, 11436210), (120, 10673796), (124, 10329480), (126, 10165520), (140, 9148968), (144, 8894830), (155, 8263584), (160, 8005347), (168, 7624140), (180, 7115864), (186, 6886320), (210, 6099312), (217, 5902560), (224, 5718105), (240, 5336898), (248, 5164740), (252, 5082760), (279, 4590880), (280, 4574484), (288, 4447415), (310, 4131792), (315, 4066208), (336, 3812070), (360, 3557932), (372, 3443160), (420, 3049656), (434, 2951280), (465, 2754528), (480, 2668449), (496, 2582370), (504, 2541380), (558, 2295440), (560, 2287242), (620, 2065896), (630, 2033104), (651, 1967520), (672, 1906035), (720, 1778966), (744, 1721580), (840, 1524828), (868, 1475640), (930, 1377264), (992, 1291185), (1008, 1270690), (1085, 1180512), (1116, 1147720), (1120, 1143621), (1240, 1032948), (1260, 1016552), (1302, 983760), (1395, 918176), (1440, 889483), (1488, 860790), (1680, 762414), (1736, 737820), (1860, 688632), (1953, 655840), (2016, 635345), (2170, 590256), (2232, 573860), (2480, 516474), (2520, 508276), (2604, 491880), (2790, 459088), (2976, 430395), (3255, 393504), (3360, 381207), (3472, 368910), (3720, 344316), (3906, 327920), (4099, 312480), (4340, 295128), (4464, 286930), (4960, 258237), (5040, 254138), (5208, 245940), (5580, 229544), (6510, 196752), (6944, 184455), (7440, 172158), (7812, 163960), (8198, 156240), (8680, 147564), (8928, 143465), (9765, 131168), (10080, 127069), (10416, 122970), (11160, 114772), (12297, 104160), (13020, 98376), (14880, 86079), (15624, 81980), (16396, 78120), (17360, 73782), (19530, 65584), (20495, 62496), (20832, 61485), (22320, 57386), (24594, 52080), (26040, 49188), (28693, 44640), (31248, 40990), (32792, 39060), (34720, 36891)]