640591308

素因数分解:

$2^2\times 3^3\times 7^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{277}}^1$

素因数の和:346

約数の個数: 288

約数和(自身を含む): 2129702400

約数和(自身を除く): 1489111092

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 19, 21, 23, 27, 28, 36, 38, 42, 46, 49, 54, 57, 63, 69, 76, 84, 92, 98, 108, 114, 126, 133, 138, 147, 161, 171, 189, 196, 207, 228, 252, 266, 276, 277, 294, 322, 342, 378, 399, 414, 437, 441, 483, 513, 532, 554, 588, 621, 644, 684, 756, 798, 828, 831, 874, 882, 931, 966, 1026, 1108, 1127, 1197, 1242, 1311, 1323, 1449, 1596, 1662, 1748, 1764, 1862, 1932, 1939, 2052, 2254, 2394, 2484, 2493, 2622, 2646, 2793, 2898, 3059, 3324, 3381, 3591, 3724, 3878, 3933, 4347, 4508, 4788, 4986, 5244, 5263, 5292, 5586, 5796, 5817, 6118, 6371, 6762, 7182, 7479, 7756, 7866, 8379, 8694, 9177, 9972, 10143, 10526, 11172, 11634, 11799, 12236, 12742, 13524, 13573, 14364, 14958, 15732, 15789, 16758, 17388, 17451, 18354, 19113, 20286, 21052, 21413, 23268, 23598, 25137, 25484, 27146, 27531, 29916, 30429, 31578, 33516, 34902, 36708, 36841, 38226, 40572, 40719, 42826, 44597, 47196, 47367, 50274, 52353, 54292, 55062, 57339, 60858, 63156, 64239, 69804, 73682, 76452, 81438, 82593, 85652, 89194, 94734, 100548, 104706, 110124, 110523, 114678, 121049, 121716, 122157, 128478, 133791, 142101, 147364, 162876, 165186, 172017, 178388, 189468, 192717, 209412, 221046, 229356, 242098, 244314, 256956, 257887, 267582, 284202, 312179, 330372, 331569, 344034, 363147, 366471, 385434, 401373, 442092, 484196, 488628, 515774, 535164, 568404, 578151, 624358, 663138, 688068, 726294, 732942, 770868, 773661, 802746, 847343, 936537, 994707, 1031548, 1089441, 1156302, 1204119, 1248716, 1326276, 1452588, 1465884, 1547322, 1605492, 1694686, 1873074, 1989414, 2178882, 2312604, 2320983, 2408238, 2542029, 2809611, 3094644, 3268323, 3389372, 3746148, 3978828, 4357764, 4641966, 4816476, 5084058, 5619222, 5931401, 6536646, 6962949, 7626087, 8428833, 9283932, 10168116, 11238444, 11862802, 13073292, 13925898, 15252174, 16857666, 17794203, 22878261, 23725604, 27851796, 30504348, 33715332, 35588406, 45756522, 53382609, 71176812, 91513044, 106765218, 160147827, 213530436, 320295654, 640591308]

約数ペア:

[(1, 640591308), (2, 320295654), (3, 213530436), (4, 160147827), (6, 106765218), (7, 91513044), (9, 71176812), (12, 53382609), (14, 45756522), (18, 35588406), (19, 33715332), (21, 30504348), (23, 27851796), (27, 23725604), (28, 22878261), (36, 17794203), (38, 16857666), (42, 15252174), (46, 13925898), (49, 13073292), (54, 11862802), (57, 11238444), (63, 10168116), (69, 9283932), (76, 8428833), (84, 7626087), (92, 6962949), (98, 6536646), (108, 5931401), (114, 5619222), (126, 5084058), (133, 4816476), (138, 4641966), (147, 4357764), (161, 3978828), (171, 3746148), (189, 3389372), (196, 3268323), (207, 3094644), (228, 2809611), (252, 2542029), (266, 2408238), (276, 2320983), (277, 2312604), (294, 2178882), (322, 1989414), (342, 1873074), (378, 1694686), (399, 1605492), (414, 1547322), (437, 1465884), (441, 1452588), (483, 1326276), (513, 1248716), (532, 1204119), (554, 1156302), (588, 1089441), (621, 1031548), (644, 994707), (684, 936537), (756, 847343), (798, 802746), (828, 773661), (831, 770868), (874, 732942), (882, 726294), (931, 688068), (966, 663138), (1026, 624358), (1108, 578151), (1127, 568404), (1197, 535164), (1242, 515774), (1311, 488628), (1323, 484196), (1449, 442092), (1596, 401373), (1662, 385434), (1748, 366471), (1764, 363147), (1862, 344034), (1932, 331569), (1939, 330372), (2052, 312179), (2254, 284202), (2394, 267582), (2484, 257887), (2493, 256956), (2622, 244314), (2646, 242098), (2793, 229356), (2898, 221046), (3059, 209412), (3324, 192717), (3381, 189468), (3591, 178388), (3724, 172017), (3878, 165186), (3933, 162876), (4347, 147364), (4508, 142101), (4788, 133791), (4986, 128478), (5244, 122157), (5263, 121716), (5292, 121049), (5586, 114678), (5796, 110523), (5817, 110124), (6118, 104706), (6371, 100548), (6762, 94734), (7182, 89194), (7479, 85652), (7756, 82593), (7866, 81438), (8379, 76452), (8694, 73682), (9177, 69804), (9972, 64239), (10143, 63156), (10526, 60858), (11172, 57339), (11634, 55062), (11799, 54292), (12236, 52353), (12742, 50274), (13524, 47367), (13573, 47196), (14364, 44597), (14958, 42826), (15732, 40719), (15789, 40572), (16758, 38226), (17388, 36841), (17451, 36708), (18354, 34902), (19113, 33516), (20286, 31578), (21052, 30429), (21413, 29916), (23268, 27531), (23598, 27146), (25137, 25484)]