257643540

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{641}}^1$

素因数の和:703

約数の個数: 288

約数和(自身を含む): 1009532160

約数和(自身を除く): 751888620

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 28, 29, 30, 33, 35, 36, 42, 44, 45, 55, 58, 60, 63, 66, 70, 77, 84, 87, 90, 99, 105, 110, 116, 126, 132, 140, 145, 154, 165, 174, 180, 198, 203, 210, 220, 231, 252, 261, 290, 308, 315, 319, 330, 348, 385, 396, 406, 420, 435, 462, 495, 522, 580, 609, 630, 638, 641, 660, 693, 770, 812, 870, 924, 957, 990, 1015, 1044, 1155, 1218, 1260, 1276, 1282, 1305, 1386, 1540, 1595, 1740, 1827, 1914, 1923, 1980, 2030, 2233, 2310, 2436, 2564, 2610, 2772, 2871, 3045, 3190, 3205, 3465, 3654, 3828, 3846, 4060, 4466, 4487, 4620, 4785, 5220, 5742, 5769, 6090, 6380, 6410, 6699, 6930, 7051, 7308, 7692, 8932, 8974, 9135, 9570, 9615, 11165, 11484, 11538, 12180, 12820, 13398, 13461, 13860, 14102, 14355, 17948, 18270, 18589, 19140, 19230, 20097, 21153, 22330, 22435, 23076, 26796, 26922, 28204, 28710, 28845, 33495, 35255, 36540, 37178, 38460, 40194, 40383, 42306, 44660, 44870, 49357, 53844, 55767, 57420, 57690, 63459, 66990, 67305, 70510, 74356, 80388, 80766, 84612, 89740, 92945, 98714, 100485, 105765, 111534, 115380, 126918, 130123, 133980, 134610, 141020, 148071, 161532, 167301, 185890, 197428, 200970, 201915, 204479, 211530, 223068, 246785, 253836, 260246, 269220, 278835, 296142, 317295, 334602, 371780, 390369, 401940, 403830, 408958, 423060, 444213, 493570, 520492, 557670, 592284, 613437, 634590, 650615, 669204, 740355, 780738, 807660, 817916, 836505, 888426, 987140, 1022395, 1115340, 1171107, 1226874, 1269180, 1301230, 1431353, 1480710, 1561476, 1673010, 1776852, 1840311, 1951845, 2044790, 2221065, 2342214, 2453748, 2602460, 2862706, 2961420, 3067185, 3346020, 3680622, 3903690, 4089580, 4294059, 4442130, 4684428, 5725412, 5855535, 6134370, 7156765, 7361244, 7807380, 8588118, 8884260, 9201555, 11711070, 12268740, 12882177, 14313530, 17176236, 18403110, 21470295, 23422140, 25764354, 28627060, 36806220, 42940590, 51528708, 64410885, 85881180, 128821770, 257643540]

約数ペア:

[(1, 257643540), (2, 128821770), (3, 85881180), (4, 64410885), (5, 51528708), (6, 42940590), (7, 36806220), (9, 28627060), (10, 25764354), (11, 23422140), (12, 21470295), (14, 18403110), (15, 17176236), (18, 14313530), (20, 12882177), (21, 12268740), (22, 11711070), (28, 9201555), (29, 8884260), (30, 8588118), (33, 7807380), (35, 7361244), (36, 7156765), (42, 6134370), (44, 5855535), (45, 5725412), (55, 4684428), (58, 4442130), (60, 4294059), (63, 4089580), (66, 3903690), (70, 3680622), (77, 3346020), (84, 3067185), (87, 2961420), (90, 2862706), (99, 2602460), (105, 2453748), (110, 2342214), (116, 2221065), (126, 2044790), (132, 1951845), (140, 1840311), (145, 1776852), (154, 1673010), (165, 1561476), (174, 1480710), (180, 1431353), (198, 1301230), (203, 1269180), (210, 1226874), (220, 1171107), (231, 1115340), (252, 1022395), (261, 987140), (290, 888426), (308, 836505), (315, 817916), (319, 807660), (330, 780738), (348, 740355), (385, 669204), (396, 650615), (406, 634590), (420, 613437), (435, 592284), (462, 557670), (495, 520492), (522, 493570), (580, 444213), (609, 423060), (630, 408958), (638, 403830), (641, 401940), (660, 390369), (693, 371780), (770, 334602), (812, 317295), (870, 296142), (924, 278835), (957, 269220), (990, 260246), (1015, 253836), (1044, 246785), (1155, 223068), (1218, 211530), (1260, 204479), (1276, 201915), (1282, 200970), (1305, 197428), (1386, 185890), (1540, 167301), (1595, 161532), (1740, 148071), (1827, 141020), (1914, 134610), (1923, 133980), (1980, 130123), (2030, 126918), (2233, 115380), (2310, 111534), (2436, 105765), (2564, 100485), (2610, 98714), (2772, 92945), (2871, 89740), (3045, 84612), (3190, 80766), (3205, 80388), (3465, 74356), (3654, 70510), (3828, 67305), (3846, 66990), (4060, 63459), (4466, 57690), (4487, 57420), (4620, 55767), (4785, 53844), (5220, 49357), (5742, 44870), (5769, 44660), (6090, 42306), (6380, 40383), (6410, 40194), (6699, 38460), (6930, 37178), (7051, 36540), (7308, 35255), (7692, 33495), (8932, 28845), (8974, 28710), (9135, 28204), (9570, 26922), (9615, 26796), (11165, 23076), (11484, 22435), (11538, 22330), (12180, 21153), (12820, 20097), (13398, 19230), (13461, 19140), (13860, 18589), (14102, 18270), (14355, 17948)]