28851280

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{8387}}^1$

素因数の和:8443

約数の個数: 40

約数和(自身を含む): 68647392

約数和(自身を除く): 39796112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 8387, 16774, 33548, 41935, 67096, 83870, 134192, 167740, 335480, 360641, 670960, 721282, 1442564, 1803205, 2885128, 3606410, 5770256, 7212820, 14425640, 28851280]

約数ペア:

[(1, 28851280), (2, 14425640), (4, 7212820), (5, 5770256), (8, 3606410), (10, 2885128), (16, 1803205), (20, 1442564), (40, 721282), (43, 670960), (80, 360641), (86, 335480), (172, 167740), (215, 134192), (344, 83870), (430, 67096), (688, 41935), (860, 33548), (1720, 16774), (3440, 8387)]