18806480

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:145

約数の個数: 160

約数和(自身を含む): 56567808

約数和(自身を除く): 37761328

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 43, 44, 55, 56, 70, 71, 77, 80, 86, 88, 110, 112, 140, 142, 154, 172, 176, 215, 220, 280, 284, 301, 308, 344, 355, 385, 430, 440, 473, 497, 560, 568, 602, 616, 688, 710, 770, 781, 860, 880, 946, 994, 1136, 1204, 1232, 1420, 1505, 1540, 1562, 1720, 1892, 1988, 2365, 2408, 2485, 2840, 3010, 3053, 3080, 3124, 3311, 3440, 3784, 3905, 3976, 4730, 4816, 4970, 5467, 5680, 6020, 6106, 6160, 6248, 6622, 7568, 7810, 7952, 9460, 9940, 10934, 12040, 12212, 12496, 13244, 15265, 15620, 16555, 18920, 19880, 21371, 21868, 24080, 24424, 26488, 27335, 30530, 31240, 33110, 33583, 37840, 39760, 42742, 43736, 48848, 52976, 54670, 61060, 62480, 66220, 67166, 85484, 87472, 106855, 109340, 122120, 132440, 134332, 167915, 170968, 213710, 218680, 235081, 244240, 264880, 268664, 335830, 341936, 427420, 437360, 470162, 537328, 671660, 854840, 940324, 1175405, 1343320, 1709680, 1880648, 2350810, 2686640, 3761296, 4701620, 9403240, 18806480]

約数ペア:

[(1, 18806480), (2, 9403240), (4, 4701620), (5, 3761296), (7, 2686640), (8, 2350810), (10, 1880648), (11, 1709680), (14, 1343320), (16, 1175405), (20, 940324), (22, 854840), (28, 671660), (35, 537328), (40, 470162), (43, 437360), (44, 427420), (55, 341936), (56, 335830), (70, 268664), (71, 264880), (77, 244240), (80, 235081), (86, 218680), (88, 213710), (110, 170968), (112, 167915), (140, 134332), (142, 132440), (154, 122120), (172, 109340), (176, 106855), (215, 87472), (220, 85484), (280, 67166), (284, 66220), (301, 62480), (308, 61060), (344, 54670), (355, 52976), (385, 48848), (430, 43736), (440, 42742), (473, 39760), (497, 37840), (560, 33583), (568, 33110), (602, 31240), (616, 30530), (688, 27335), (710, 26488), (770, 24424), (781, 24080), (860, 21868), (880, 21371), (946, 19880), (994, 18920), (1136, 16555), (1204, 15620), (1232, 15265), (1420, 13244), (1505, 12496), (1540, 12212), (1562, 12040), (1720, 10934), (1892, 9940), (1988, 9460), (2365, 7952), (2408, 7810), (2485, 7568), (2840, 6622), (3010, 6248), (3053, 6160), (3080, 6106), (3124, 6020), (3311, 5680), (3440, 5467), (3784, 4970), (3905, 4816), (3976, 4730)]