20987414

素因数分解:

$2^1\times 7^1\times {\mathrm{947}}^1\times {\mathrm{1583}}^1$

素因数の和:2539

約数の個数: 16

約数和(自身を含む): 36039168

約数和(自身を除く): 15051754

約数列:

[1, 2, 7, 14, 947, 1583, 1894, 3166, 6629, 11081, 13258, 22162, 1499101, 2998202, 10493707, 20987414]

約数ペア:

[(1, 20987414), (2, 10493707), (7, 2998202), (14, 1499101), (947, 22162), (1583, 13258), (1894, 11081), (3166, 6629)]