28727440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{1193}}^1$

素因数の和:1256

約数の個数: 80

約数和(自身を含む): 78173568

約数和(自身を除く): 49446128

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 43, 56, 70, 80, 86, 112, 140, 172, 215, 280, 301, 344, 430, 560, 602, 688, 860, 1193, 1204, 1505, 1720, 2386, 2408, 3010, 3440, 4772, 4816, 5965, 6020, 8351, 9544, 11930, 12040, 16702, 19088, 23860, 24080, 33404, 41755, 47720, 51299, 66808, 83510, 95440, 102598, 133616, 167020, 205196, 256495, 334040, 359093, 410392, 512990, 668080, 718186, 820784, 1025980, 1436372, 1795465, 2051960, 2872744, 3590930, 4103920, 5745488, 7181860, 14363720, 28727440]

約数ペア:

[(1, 28727440), (2, 14363720), (4, 7181860), (5, 5745488), (7, 4103920), (8, 3590930), (10, 2872744), (14, 2051960), (16, 1795465), (20, 1436372), (28, 1025980), (35, 820784), (40, 718186), (43, 668080), (56, 512990), (70, 410392), (80, 359093), (86, 334040), (112, 256495), (140, 205196), (172, 167020), (215, 133616), (280, 102598), (301, 95440), (344, 83510), (430, 66808), (560, 51299), (602, 47720), (688, 41755), (860, 33404), (1193, 24080), (1204, 23860), (1505, 19088), (1720, 16702), (2386, 12040), (2408, 11930), (3010, 9544), (3440, 8351), (4772, 6020), (4816, 5965)]