20978524

素因数分解:

$2^2\times 7^1\times {\mathrm{359}}^1\times {\mathrm{2087}}^1$

素因数の和:2457

約数の個数: 24

約数和(自身を含む): 42094080

約数和(自身を除く): 21115556

約数列:

[1, 2, 4, 7, 14, 28, 359, 718, 1436, 2087, 2513, 4174, 5026, 8348, 10052, 14609, 29218, 58436, 749233, 1498466, 2996932, 5244631, 10489262, 20978524]

約数ペア:

[(1, 20978524), (2, 10489262), (4, 5244631), (7, 2996932), (14, 1498466), (28, 749233), (359, 58436), (718, 29218), (1436, 14609), (2087, 10052), (2513, 8348), (4174, 5026)]