28858160

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{8389}}^1$

素因数の和:8445

約数の個数: 40

約数和(自身を含む): 68663760

約数和(自身を除く): 39805600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 8389, 16778, 33556, 41945, 67112, 83890, 134224, 167780, 335560, 360727, 671120, 721454, 1442908, 1803635, 2885816, 3607270, 5771632, 7214540, 14429080, 28858160]

約数ペア:

[(1, 28858160), (2, 14429080), (4, 7214540), (5, 5771632), (8, 3607270), (10, 2885816), (16, 1803635), (20, 1442908), (40, 721454), (43, 671120), (80, 360727), (86, 335560), (172, 167780), (215, 134224), (344, 83890), (430, 67112), (688, 41945), (860, 33556), (1720, 16778), (3440, 8389)]