21274680

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:114

約数の個数: 256

約数和(自身を含む): 81100800

約数和(自身を除く): 59826120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 19, 20, 21, 24, 28, 30, 31, 35, 38, 40, 42, 43, 56, 57, 60, 62, 70, 76, 84, 86, 93, 95, 105, 114, 120, 124, 129, 133, 140, 152, 155, 168, 172, 186, 190, 210, 215, 217, 228, 248, 258, 266, 280, 285, 301, 310, 344, 372, 380, 399, 420, 430, 434, 456, 465, 516, 532, 570, 589, 602, 620, 645, 651, 665, 744, 760, 798, 817, 840, 860, 868, 903, 930, 1032, 1064, 1085, 1140, 1178, 1204, 1240, 1290, 1302, 1330, 1333, 1505, 1596, 1634, 1720, 1736, 1767, 1806, 1860, 1995, 2170, 2280, 2356, 2408, 2451, 2580, 2604, 2660, 2666, 2945, 3010, 3192, 3255, 3268, 3534, 3612, 3720, 3990, 3999, 4085, 4123, 4340, 4515, 4712, 4902, 5160, 5208, 5320, 5332, 5719, 5890, 6020, 6510, 6536, 6665, 7068, 7224, 7980, 7998, 8170, 8246, 8680, 8835, 9030, 9331, 9804, 10664, 11438, 11780, 12040, 12255, 12369, 13020, 13330, 14136, 15960, 15996, 16340, 16492, 17157, 17670, 18060, 18662, 19608, 19995, 20615, 22876, 23560, 24510, 24738, 25327, 26040, 26660, 27993, 28595, 31992, 32680, 32984, 34314, 35340, 36120, 37324, 39990, 41230, 45752, 46655, 49020, 49476, 50654, 53320, 55986, 57190, 61845, 68628, 70680, 74648, 75981, 79980, 82460, 85785, 93310, 98040, 98952, 101308, 111972, 114380, 123690, 126635, 137256, 139965, 151962, 159960, 164920, 171570, 177289, 186620, 202616, 223944, 228760, 247380, 253270, 279930, 303924, 343140, 354578, 373240, 379905, 494760, 506540, 531867, 559860, 607848, 686280, 709156, 759810, 886445, 1013080, 1063734, 1119720, 1418312, 1519620, 1772890, 2127468, 2659335, 3039240, 3545780, 4254936, 5318670, 7091560, 10637340, 21274680]

約数ペア:

[(1, 21274680), (2, 10637340), (3, 7091560), (4, 5318670), (5, 4254936), (6, 3545780), (7, 3039240), (8, 2659335), (10, 2127468), (12, 1772890), (14, 1519620), (15, 1418312), (19, 1119720), (20, 1063734), (21, 1013080), (24, 886445), (28, 759810), (30, 709156), (31, 686280), (35, 607848), (38, 559860), (40, 531867), (42, 506540), (43, 494760), (56, 379905), (57, 373240), (60, 354578), (62, 343140), (70, 303924), (76, 279930), (84, 253270), (86, 247380), (93, 228760), (95, 223944), (105, 202616), (114, 186620), (120, 177289), (124, 171570), (129, 164920), (133, 159960), (140, 151962), (152, 139965), (155, 137256), (168, 126635), (172, 123690), (186, 114380), (190, 111972), (210, 101308), (215, 98952), (217, 98040), (228, 93310), (248, 85785), (258, 82460), (266, 79980), (280, 75981), (285, 74648), (301, 70680), (310, 68628), (344, 61845), (372, 57190), (380, 55986), (399, 53320), (420, 50654), (430, 49476), (434, 49020), (456, 46655), (465, 45752), (516, 41230), (532, 39990), (570, 37324), (589, 36120), (602, 35340), (620, 34314), (645, 32984), (651, 32680), (665, 31992), (744, 28595), (760, 27993), (798, 26660), (817, 26040), (840, 25327), (860, 24738), (868, 24510), (903, 23560), (930, 22876), (1032, 20615), (1064, 19995), (1085, 19608), (1140, 18662), (1178, 18060), (1204, 17670), (1240, 17157), (1290, 16492), (1302, 16340), (1330, 15996), (1333, 15960), (1505, 14136), (1596, 13330), (1634, 13020), (1720, 12369), (1736, 12255), (1767, 12040), (1806, 11780), (1860, 11438), (1995, 10664), (2170, 9804), (2280, 9331), (2356, 9030), (2408, 8835), (2451, 8680), (2580, 8246), (2604, 8170), (2660, 7998), (2666, 7980), (2945, 7224), (3010, 7068), (3192, 6665), (3255, 6536), (3268, 6510), (3534, 6020), (3612, 5890), (3720, 5719), (3990, 5332), (3999, 5320), (4085, 5208), (4123, 5160), (4340, 4902), (4515, 4712)]