27819280

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{8087}}^1$

素因数の和:8143

約数の個数: 40

約数和(自身を含む): 66192192

約数和(自身を除く): 38372912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 8087, 16174, 32348, 40435, 64696, 80870, 129392, 161740, 323480, 347741, 646960, 695482, 1390964, 1738705, 2781928, 3477410, 5563856, 6954820, 13909640, 27819280]

約数ペア:

[(1, 27819280), (2, 13909640), (4, 6954820), (5, 5563856), (8, 3477410), (10, 2781928), (16, 1738705), (20, 1390964), (40, 695482), (43, 646960), (80, 347741), (86, 323480), (172, 161740), (215, 129392), (344, 80870), (430, 64696), (688, 40435), (860, 32348), (1720, 16174), (3440, 8087)]