9931280

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2887}}^1$

素因数の和:2943

約数の個数: 40

約数和(自身を含む): 23635392

約数和(自身を除く): 13704112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 2887, 3440, 5774, 11548, 14435, 23096, 28870, 46192, 57740, 115480, 124141, 230960, 248282, 496564, 620705, 993128, 1241410, 1986256, 2482820, 4965640, 9931280]

約数ペア:

[(1, 9931280), (2, 4965640), (4, 2482820), (5, 1986256), (8, 1241410), (10, 993128), (16, 620705), (20, 496564), (40, 248282), (43, 230960), (80, 124141), (86, 115480), (172, 57740), (215, 46192), (344, 28870), (430, 23096), (688, 14435), (860, 11548), (1720, 5774), (2887, 3440)]