311212720

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1$

素因数の和:268

約数の個数: 240

約数和(自身を含む): 940439808

約数和(自身を除く): 629227088

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 31, 35, 40, 49, 52, 56, 62, 65, 70, 80, 91, 98, 104, 112, 124, 130, 140, 155, 182, 196, 197, 208, 217, 245, 248, 260, 280, 310, 364, 392, 394, 403, 434, 455, 490, 496, 520, 560, 620, 637, 728, 784, 788, 806, 868, 910, 980, 985, 1040, 1085, 1240, 1274, 1379, 1456, 1519, 1576, 1612, 1736, 1820, 1960, 1970, 2015, 2170, 2480, 2548, 2561, 2758, 2821, 3038, 3152, 3185, 3224, 3472, 3640, 3920, 3940, 4030, 4340, 5096, 5122, 5516, 5642, 6076, 6107, 6370, 6448, 6895, 7280, 7595, 7880, 8060, 8680, 9653, 10192, 10244, 11032, 11284, 12152, 12214, 12740, 12805, 13790, 14105, 15190, 15760, 16120, 17360, 17927, 19306, 19747, 20488, 22064, 22568, 24304, 24428, 25480, 25610, 27580, 28210, 30380, 30535, 32240, 35854, 38612, 39494, 40976, 42749, 45136, 48265, 48856, 50960, 51220, 55160, 56420, 60760, 61070, 71708, 77224, 78988, 79391, 85498, 89635, 96530, 97712, 98735, 102440, 110320, 112840, 121520, 122140, 125489, 143416, 154448, 157976, 158782, 170996, 179270, 193060, 197470, 204880, 213745, 225680, 244280, 250978, 286832, 299243, 315952, 317564, 341992, 358540, 386120, 394940, 396955, 427490, 488560, 501956, 555737, 598486, 627445, 635128, 683984, 717080, 772240, 789880, 793910, 854980, 1003912, 1111474, 1196972, 1254890, 1270256, 1434160, 1496215, 1579760, 1587820, 1709960, 2007824, 2222948, 2393944, 2509780, 2778685, 2992430, 3175640, 3419920, 3890159, 4445896, 4787888, 5019560, 5557370, 5984860, 6351280, 7780318, 8891792, 10039120, 11114740, 11969720, 15560636, 19450795, 22229480, 23939440, 31121272, 38901590, 44458960, 62242544, 77803180, 155606360, 311212720]

約数ペア:

[(1, 311212720), (2, 155606360), (4, 77803180), (5, 62242544), (7, 44458960), (8, 38901590), (10, 31121272), (13, 23939440), (14, 22229480), (16, 19450795), (20, 15560636), (26, 11969720), (28, 11114740), (31, 10039120), (35, 8891792), (40, 7780318), (49, 6351280), (52, 5984860), (56, 5557370), (62, 5019560), (65, 4787888), (70, 4445896), (80, 3890159), (91, 3419920), (98, 3175640), (104, 2992430), (112, 2778685), (124, 2509780), (130, 2393944), (140, 2222948), (155, 2007824), (182, 1709960), (196, 1587820), (197, 1579760), (208, 1496215), (217, 1434160), (245, 1270256), (248, 1254890), (260, 1196972), (280, 1111474), (310, 1003912), (364, 854980), (392, 793910), (394, 789880), (403, 772240), (434, 717080), (455, 683984), (490, 635128), (496, 627445), (520, 598486), (560, 555737), (620, 501956), (637, 488560), (728, 427490), (784, 396955), (788, 394940), (806, 386120), (868, 358540), (910, 341992), (980, 317564), (985, 315952), (1040, 299243), (1085, 286832), (1240, 250978), (1274, 244280), (1379, 225680), (1456, 213745), (1519, 204880), (1576, 197470), (1612, 193060), (1736, 179270), (1820, 170996), (1960, 158782), (1970, 157976), (2015, 154448), (2170, 143416), (2480, 125489), (2548, 122140), (2561, 121520), (2758, 112840), (2821, 110320), (3038, 102440), (3152, 98735), (3185, 97712), (3224, 96530), (3472, 89635), (3640, 85498), (3920, 79391), (3940, 78988), (4030, 77224), (4340, 71708), (5096, 61070), (5122, 60760), (5516, 56420), (5642, 55160), (6076, 51220), (6107, 50960), (6370, 48856), (6448, 48265), (6895, 45136), (7280, 42749), (7595, 40976), (7880, 39494), (8060, 38612), (8680, 35854), (9653, 32240), (10192, 30535), (10244, 30380), (11032, 28210), (11284, 27580), (12152, 25610), (12214, 25480), (12740, 24428), (12805, 24304), (13790, 22568), (14105, 22064), (15190, 20488), (15760, 19747), (16120, 19306), (17360, 17927)]