2686640

素因数分解:

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

素因数の和:138

約数の個数: 80

約数和(自身を含む): 7070976

約数和(自身を除く): 4384336

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 43, 44, 55, 71, 80, 86, 88, 110, 142, 172, 176, 215, 220, 284, 344, 355, 430, 440, 473, 568, 688, 710, 781, 860, 880, 946, 1136, 1420, 1562, 1720, 1892, 2365, 2840, 3053, 3124, 3440, 3784, 3905, 4730, 5680, 6106, 6248, 7568, 7810, 9460, 12212, 12496, 15265, 15620, 18920, 24424, 30530, 31240, 33583, 37840, 48848, 61060, 62480, 67166, 122120, 134332, 167915, 244240, 268664, 335830, 537328, 671660, 1343320, 2686640]

約数ペア:

[(1, 2686640), (2, 1343320), (4, 671660), (5, 537328), (8, 335830), (10, 268664), (11, 244240), (16, 167915), (20, 134332), (22, 122120), (40, 67166), (43, 62480), (44, 61060), (55, 48848), (71, 37840), (80, 33583), (86, 31240), (88, 30530), (110, 24424), (142, 18920), (172, 15620), (176, 15265), (215, 12496), (220, 12212), (284, 9460), (344, 7810), (355, 7568), (430, 6248), (440, 6106), (473, 5680), (568, 4730), (688, 3905), (710, 3784), (781, 3440), (860, 3124), (880, 3053), (946, 2840), (1136, 2365), (1420, 1892), (1562, 1720)]