28540996820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{1250701}}^1$

素因数の和:1250880

約数の個数: 48

約数和(自身を含む): 68918683008

約数和(自身を除く): 40377686188

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 163, 326, 652, 815, 1141, 1630, 2282, 3260, 4564, 5705, 11410, 22820, 1250701, 2501402, 5002804, 6253505, 8754907, 12507010, 17509814, 25014020, 35019628, 43774535, 87549070, 175098140, 203864263, 407728526, 815457052, 1019321315, 1427049841, 2038642630, 2854099682, 4077285260, 5708199364, 7135249205, 14270498410, 28540996820]

約数ペア:

[(1, 28540996820), (2, 14270498410), (4, 7135249205), (5, 5708199364), (7, 4077285260), (10, 2854099682), (14, 2038642630), (20, 1427049841), (28, 1019321315), (35, 815457052), (70, 407728526), (140, 203864263), (163, 175098140), (326, 87549070), (652, 43774535), (815, 35019628), (1141, 25014020), (1630, 17509814), (2282, 12507010), (3260, 8754907), (4564, 6253505), (5705, 5002804), (11410, 2501402), (22820, 1250701)]