8438320

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{223}}^1$

素因数の和:290

約数の個数: 80

約数和(自身を含む): 21998592

約数和(自身を除く): 13560272

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 43, 44, 55, 80, 86, 88, 110, 172, 176, 215, 220, 223, 344, 430, 440, 446, 473, 688, 860, 880, 892, 946, 1115, 1720, 1784, 1892, 2230, 2365, 2453, 3440, 3568, 3784, 4460, 4730, 4906, 7568, 8920, 9460, 9589, 9812, 12265, 17840, 18920, 19178, 19624, 24530, 37840, 38356, 39248, 47945, 49060, 76712, 95890, 98120, 105479, 153424, 191780, 196240, 210958, 383560, 421916, 527395, 767120, 843832, 1054790, 1687664, 2109580, 4219160, 8438320]

約数ペア:

[(1, 8438320), (2, 4219160), (4, 2109580), (5, 1687664), (8, 1054790), (10, 843832), (11, 767120), (16, 527395), (20, 421916), (22, 383560), (40, 210958), (43, 196240), (44, 191780), (55, 153424), (80, 105479), (86, 98120), (88, 95890), (110, 76712), (172, 49060), (176, 47945), (215, 39248), (220, 38356), (223, 37840), (344, 24530), (430, 19624), (440, 19178), (446, 18920), (473, 17840), (688, 12265), (860, 9812), (880, 9589), (892, 9460), (946, 8920), (1115, 7568), (1720, 4906), (1784, 4730), (1892, 4460), (2230, 3784), (2365, 3568), (2453, 3440)]