21420784

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17387}}^1$

素因数の和:17413

約数の個数: 40

約数和(自身を含む): 51746688

約数和(自身を除く): 30325904

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 77, 88, 112, 154, 176, 308, 616, 1232, 17387, 34774, 69548, 121709, 139096, 191257, 243418, 278192, 382514, 486836, 765028, 973672, 1338799, 1530056, 1947344, 2677598, 3060112, 5355196, 10710392, 21420784]

約数ペア:

[(1, 21420784), (2, 10710392), (4, 5355196), (7, 3060112), (8, 2677598), (11, 1947344), (14, 1530056), (16, 1338799), (22, 973672), (28, 765028), (44, 486836), (56, 382514), (77, 278192), (88, 243418), (112, 191257), (154, 139096), (176, 121709), (308, 69548), (616, 34774), (1232, 17387)]