257803560

素因数分解:

$2^3\times 3^7\times 5^1\times 7^1\times {\mathrm{421}}^1$

素因数の和:460

約数の個数: 256

約数和(自身を含む): 996595200

約数和(自身を除く): 738791640

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 54, 56, 60, 63, 70, 72, 81, 84, 90, 105, 108, 120, 126, 135, 140, 162, 168, 180, 189, 210, 216, 243, 252, 270, 280, 315, 324, 360, 378, 405, 420, 421, 486, 504, 540, 567, 630, 648, 729, 756, 810, 840, 842, 945, 972, 1080, 1134, 1215, 1260, 1263, 1458, 1512, 1620, 1684, 1701, 1890, 1944, 2105, 2187, 2268, 2430, 2520, 2526, 2835, 2916, 2947, 3240, 3368, 3402, 3645, 3780, 3789, 4210, 4374, 4536, 4860, 5052, 5103, 5670, 5832, 5894, 6315, 6804, 7290, 7560, 7578, 8420, 8505, 8748, 8841, 9720, 10104, 10206, 10935, 11340, 11367, 11788, 12630, 13608, 14580, 14735, 15156, 15309, 16840, 17010, 17496, 17682, 18945, 20412, 21870, 22680, 22734, 23576, 25260, 25515, 26523, 29160, 29470, 30312, 30618, 34020, 34101, 35364, 37890, 40824, 43740, 44205, 45468, 50520, 51030, 53046, 56835, 58940, 61236, 68040, 68202, 70728, 75780, 76545, 79569, 87480, 88410, 90936, 102060, 102303, 106092, 113670, 117880, 122472, 132615, 136404, 151560, 153090, 159138, 170505, 176820, 204120, 204606, 212184, 227340, 238707, 265230, 272808, 306180, 306909, 318276, 341010, 353640, 397845, 409212, 454680, 477414, 511515, 530460, 612360, 613818, 636552, 682020, 716121, 795690, 818424, 920727, 954828, 1023030, 1060920, 1193535, 1227636, 1364040, 1432242, 1534545, 1591380, 1841454, 1909656, 2046060, 2148363, 2387070, 2455272, 2864484, 3069090, 3182760, 3580605, 3682908, 4092120, 4296726, 4603635, 4774140, 5728968, 6138180, 6445089, 7161210, 7365816, 8593452, 9207270, 9548280, 10741815, 12276360, 12890178, 14322420, 17186904, 18414540, 21483630, 25780356, 28644840, 32225445, 36829080, 42967260, 51560712, 64450890, 85934520, 128901780, 257803560]

約数ペア:

[(1, 257803560), (2, 128901780), (3, 85934520), (4, 64450890), (5, 51560712), (6, 42967260), (7, 36829080), (8, 32225445), (9, 28644840), (10, 25780356), (12, 21483630), (14, 18414540), (15, 17186904), (18, 14322420), (20, 12890178), (21, 12276360), (24, 10741815), (27, 9548280), (28, 9207270), (30, 8593452), (35, 7365816), (36, 7161210), (40, 6445089), (42, 6138180), (45, 5728968), (54, 4774140), (56, 4603635), (60, 4296726), (63, 4092120), (70, 3682908), (72, 3580605), (81, 3182760), (84, 3069090), (90, 2864484), (105, 2455272), (108, 2387070), (120, 2148363), (126, 2046060), (135, 1909656), (140, 1841454), (162, 1591380), (168, 1534545), (180, 1432242), (189, 1364040), (210, 1227636), (216, 1193535), (243, 1060920), (252, 1023030), (270, 954828), (280, 920727), (315, 818424), (324, 795690), (360, 716121), (378, 682020), (405, 636552), (420, 613818), (421, 612360), (486, 530460), (504, 511515), (540, 477414), (567, 454680), (630, 409212), (648, 397845), (729, 353640), (756, 341010), (810, 318276), (840, 306909), (842, 306180), (945, 272808), (972, 265230), (1080, 238707), (1134, 227340), (1215, 212184), (1260, 204606), (1263, 204120), (1458, 176820), (1512, 170505), (1620, 159138), (1684, 153090), (1701, 151560), (1890, 136404), (1944, 132615), (2105, 122472), (2187, 117880), (2268, 113670), (2430, 106092), (2520, 102303), (2526, 102060), (2835, 90936), (2916, 88410), (2947, 87480), (3240, 79569), (3368, 76545), (3402, 75780), (3645, 70728), (3780, 68202), (3789, 68040), (4210, 61236), (4374, 58940), (4536, 56835), (4860, 53046), (5052, 51030), (5103, 50520), (5670, 45468), (5832, 44205), (5894, 43740), (6315, 40824), (6804, 37890), (7290, 35364), (7560, 34101), (7578, 34020), (8420, 30618), (8505, 30312), (8748, 29470), (8841, 29160), (9720, 26523), (10104, 25515), (10206, 25260), (10935, 23576), (11340, 22734), (11367, 22680), (11788, 21870), (12630, 20412), (13608, 18945), (14580, 17682), (14735, 17496), (15156, 17010), (15309, 16840)]