20513864

素因数分解:

$2^3\times 7^1\times {\mathrm{337}}^1\times {\mathrm{1087}}^1$

素因数の和:1437

約数の個数: 32

約数和(自身を含む): 44129280

約数和(自身を除く): 23615416

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 337, 674, 1087, 1348, 2174, 2359, 2696, 4348, 4718, 7609, 8696, 9436, 15218, 18872, 30436, 60872, 366319, 732638, 1465276, 2564233, 2930552, 5128466, 10256932, 20513864]

約数ペア:

[(1, 20513864), (2, 10256932), (4, 5128466), (7, 2930552), (8, 2564233), (14, 1465276), (28, 732638), (56, 366319), (337, 60872), (674, 30436), (1087, 18872), (1348, 15218), (2174, 9436), (2359, 8696), (2696, 7609), (4348, 4718)]