420521640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{641}}^1$

素因数の和:744

約数の個数: 256

約数和(自身を含む): 1597501440

約数和(自身を除く): 1176979800

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 20, 21, 22, 24, 28, 30, 33, 35, 40, 42, 44, 55, 56, 60, 66, 70, 71, 77, 84, 88, 105, 110, 120, 132, 140, 142, 154, 165, 168, 210, 213, 220, 231, 264, 280, 284, 308, 330, 355, 385, 420, 426, 440, 462, 497, 568, 616, 641, 660, 710, 770, 781, 840, 852, 924, 994, 1065, 1155, 1282, 1320, 1420, 1491, 1540, 1562, 1704, 1848, 1923, 1988, 2130, 2310, 2343, 2485, 2564, 2840, 2982, 3080, 3124, 3205, 3846, 3905, 3976, 4260, 4487, 4620, 4686, 4970, 5128, 5467, 5964, 6248, 6410, 7051, 7455, 7692, 7810, 8520, 8974, 9240, 9372, 9615, 9940, 10934, 11715, 11928, 12820, 13461, 14102, 14910, 15384, 15620, 16401, 17948, 18744, 19230, 19880, 21153, 21868, 22435, 23430, 25640, 26922, 27335, 28204, 29820, 31240, 32802, 35255, 35896, 38460, 42306, 43736, 44870, 45511, 46860, 49357, 53844, 54670, 56408, 59640, 65604, 67305, 70510, 76920, 82005, 84612, 89740, 91022, 93720, 98714, 105765, 107688, 109340, 131208, 134610, 136533, 141020, 148071, 164010, 169224, 179480, 182044, 197428, 211530, 218680, 227555, 246785, 269220, 273066, 282040, 296142, 318577, 328020, 364088, 394856, 423060, 455110, 493570, 500621, 538440, 546132, 592284, 637154, 656040, 682665, 740355, 846120, 910220, 955731, 987140, 1001242, 1092264, 1184568, 1274308, 1365330, 1480710, 1501863, 1592885, 1820440, 1911462, 1974280, 2002484, 2503105, 2548616, 2730660, 2961420, 3003726, 3185770, 3504347, 3822924, 4004968, 4778655, 5006210, 5461320, 5922840, 6007452, 6371540, 7008694, 7509315, 7645848, 9557310, 10012420, 10513041, 12014904, 12743080, 14017388, 15018630, 17521735, 19114620, 20024840, 21026082, 28034776, 30037260, 35043470, 38229240, 42052164, 52565205, 60074520, 70086940, 84104328, 105130410, 140173880, 210260820, 420521640]

約数ペア:

[(1, 420521640), (2, 210260820), (3, 140173880), (4, 105130410), (5, 84104328), (6, 70086940), (7, 60074520), (8, 52565205), (10, 42052164), (11, 38229240), (12, 35043470), (14, 30037260), (15, 28034776), (20, 21026082), (21, 20024840), (22, 19114620), (24, 17521735), (28, 15018630), (30, 14017388), (33, 12743080), (35, 12014904), (40, 10513041), (42, 10012420), (44, 9557310), (55, 7645848), (56, 7509315), (60, 7008694), (66, 6371540), (70, 6007452), (71, 5922840), (77, 5461320), (84, 5006210), (88, 4778655), (105, 4004968), (110, 3822924), (120, 3504347), (132, 3185770), (140, 3003726), (142, 2961420), (154, 2730660), (165, 2548616), (168, 2503105), (210, 2002484), (213, 1974280), (220, 1911462), (231, 1820440), (264, 1592885), (280, 1501863), (284, 1480710), (308, 1365330), (330, 1274308), (355, 1184568), (385, 1092264), (420, 1001242), (426, 987140), (440, 955731), (462, 910220), (497, 846120), (568, 740355), (616, 682665), (641, 656040), (660, 637154), (710, 592284), (770, 546132), (781, 538440), (840, 500621), (852, 493570), (924, 455110), (994, 423060), (1065, 394856), (1155, 364088), (1282, 328020), (1320, 318577), (1420, 296142), (1491, 282040), (1540, 273066), (1562, 269220), (1704, 246785), (1848, 227555), (1923, 218680), (1988, 211530), (2130, 197428), (2310, 182044), (2343, 179480), (2485, 169224), (2564, 164010), (2840, 148071), (2982, 141020), (3080, 136533), (3124, 134610), (3205, 131208), (3846, 109340), (3905, 107688), (3976, 105765), (4260, 98714), (4487, 93720), (4620, 91022), (4686, 89740), (4970, 84612), (5128, 82005), (5467, 76920), (5964, 70510), (6248, 67305), (6410, 65604), (7051, 59640), (7455, 56408), (7692, 54670), (7810, 53844), (8520, 49357), (8974, 46860), (9240, 45511), (9372, 44870), (9615, 43736), (9940, 42306), (10934, 38460), (11715, 35896), (11928, 35255), (12820, 32802), (13461, 31240), (14102, 29820), (14910, 28204), (15384, 27335), (15620, 26922), (16401, 25640), (17948, 23430), (18744, 22435), (19230, 21868), (19880, 21153)]