20784484

素因数分解:

$2^2\times 7^1\times {\mathrm{661}}^1\times {\mathrm{1123}}^1$

素因数の和:1795

約数の個数: 24

約数和(自身を含む): 41668928

約数和(自身を除く): 20884444

約数列:

[1, 2, 4, 7, 14, 28, 661, 1123, 1322, 2246, 2644, 4492, 4627, 7861, 9254, 15722, 18508, 31444, 742303, 1484606, 2969212, 5196121, 10392242, 20784484]

約数ペア:

[(1, 20784484), (2, 10392242), (4, 5196121), (7, 2969212), (14, 1484606), (28, 742303), (661, 31444), (1123, 18508), (1322, 15722), (2246, 9254), (2644, 7861), (4492, 4627)]