256789440

素因数分解:

$2^6\times 3^4\times 5^1\times {\mathrm{9907}}^1$

素因数の和:9936

約数の個数: 140

約数和(自身を含む): 913537416

約数和(自身を除く): 656747976

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, 135, 144, 160, 162, 180, 192, 216, 240, 270, 288, 320, 324, 360, 405, 432, 480, 540, 576, 648, 720, 810, 864, 960, 1080, 1296, 1440, 1620, 1728, 2160, 2592, 2880, 3240, 4320, 5184, 6480, 8640, 9907, 12960, 19814, 25920, 29721, 39628, 49535, 59442, 79256, 89163, 99070, 118884, 148605, 158512, 178326, 198140, 237768, 267489, 297210, 317024, 356652, 396280, 445815, 475536, 534978, 594420, 634048, 713304, 792560, 802467, 891630, 951072, 1069956, 1188840, 1337445, 1426608, 1585120, 1604934, 1783260, 1902144, 2139912, 2377680, 2674890, 2853216, 3170240, 3209868, 3566520, 4012335, 4279824, 4755360, 5349780, 5706432, 6419736, 7133040, 8024670, 8559648, 9510720, 10699560, 12839472, 14266080, 16049340, 17119296, 21399120, 25678944, 28532160, 32098680, 42798240, 51357888, 64197360, 85596480, 128394720, 256789440]

約数ペア:

[(1, 256789440), (2, 128394720), (3, 85596480), (4, 64197360), (5, 51357888), (6, 42798240), (8, 32098680), (9, 28532160), (10, 25678944), (12, 21399120), (15, 17119296), (16, 16049340), (18, 14266080), (20, 12839472), (24, 10699560), (27, 9510720), (30, 8559648), (32, 8024670), (36, 7133040), (40, 6419736), (45, 5706432), (48, 5349780), (54, 4755360), (60, 4279824), (64, 4012335), (72, 3566520), (80, 3209868), (81, 3170240), (90, 2853216), (96, 2674890), (108, 2377680), (120, 2139912), (135, 1902144), (144, 1783260), (160, 1604934), (162, 1585120), (180, 1426608), (192, 1337445), (216, 1188840), (240, 1069956), (270, 951072), (288, 891630), (320, 802467), (324, 792560), (360, 713304), (405, 634048), (432, 594420), (480, 534978), (540, 475536), (576, 445815), (648, 396280), (720, 356652), (810, 317024), (864, 297210), (960, 267489), (1080, 237768), (1296, 198140), (1440, 178326), (1620, 158512), (1728, 148605), (2160, 118884), (2592, 99070), (2880, 89163), (3240, 79256), (4320, 59442), (5184, 49535), (6480, 39628), (8640, 29721), (9907, 25920), (12960, 19814)]