261377280

素因数分解:

$2^8\times 3^4\times 5^1\times {\mathrm{2521}}^1$

素因数の和:2554

約数の個数: 180

約数和(自身を含む): 935626692

約数和(自身を除く): 674249412

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 81, 90, 96, 108, 120, 128, 135, 144, 160, 162, 180, 192, 216, 240, 256, 270, 288, 320, 324, 360, 384, 405, 432, 480, 540, 576, 640, 648, 720, 768, 810, 864, 960, 1080, 1152, 1280, 1296, 1440, 1620, 1728, 1920, 2160, 2304, 2521, 2592, 2880, 3240, 3456, 3840, 4320, 5042, 5184, 5760, 6480, 6912, 7563, 8640, 10084, 10368, 11520, 12605, 12960, 15126, 17280, 20168, 20736, 22689, 25210, 25920, 30252, 34560, 37815, 40336, 45378, 50420, 51840, 60504, 68067, 75630, 80672, 90756, 100840, 103680, 113445, 121008, 136134, 151260, 161344, 181512, 201680, 204201, 226890, 242016, 272268, 302520, 322688, 340335, 363024, 403360, 408402, 453780, 484032, 544536, 605040, 645376, 680670, 726048, 806720, 816804, 907560, 968064, 1021005, 1089072, 1210080, 1361340, 1452096, 1613440, 1633608, 1815120, 1936128, 2042010, 2178144, 2420160, 2722680, 2904192, 3226880, 3267216, 3630240, 4084020, 4356288, 4840320, 5445360, 5808384, 6534432, 7260480, 8168040, 8712576, 9680640, 10890720, 13068864, 14520960, 16336080, 17425152, 21781440, 26137728, 29041920, 32672160, 43562880, 52275456, 65344320, 87125760, 130688640, 261377280]

約数ペア:

[(1, 261377280), (2, 130688640), (3, 87125760), (4, 65344320), (5, 52275456), (6, 43562880), (8, 32672160), (9, 29041920), (10, 26137728), (12, 21781440), (15, 17425152), (16, 16336080), (18, 14520960), (20, 13068864), (24, 10890720), (27, 9680640), (30, 8712576), (32, 8168040), (36, 7260480), (40, 6534432), (45, 5808384), (48, 5445360), (54, 4840320), (60, 4356288), (64, 4084020), (72, 3630240), (80, 3267216), (81, 3226880), (90, 2904192), (96, 2722680), (108, 2420160), (120, 2178144), (128, 2042010), (135, 1936128), (144, 1815120), (160, 1633608), (162, 1613440), (180, 1452096), (192, 1361340), (216, 1210080), (240, 1089072), (256, 1021005), (270, 968064), (288, 907560), (320, 816804), (324, 806720), (360, 726048), (384, 680670), (405, 645376), (432, 605040), (480, 544536), (540, 484032), (576, 453780), (640, 408402), (648, 403360), (720, 363024), (768, 340335), (810, 322688), (864, 302520), (960, 272268), (1080, 242016), (1152, 226890), (1280, 204201), (1296, 201680), (1440, 181512), (1620, 161344), (1728, 151260), (1920, 136134), (2160, 121008), (2304, 113445), (2521, 103680), (2592, 100840), (2880, 90756), (3240, 80672), (3456, 75630), (3840, 68067), (4320, 60504), (5042, 51840), (5184, 50420), (5760, 45378), (6480, 40336), (6912, 37815), (7563, 34560), (8640, 30252), (10084, 25920), (10368, 25210), (11520, 22689), (12605, 20736), (12960, 20168), (15126, 17280)]