20987540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149911}}^1$

素因数の和:149927

約数の個数: 24

約数和(自身を含む): 50370432

約数和(自身を除く): 29382892

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149911, 299822, 599644, 749555, 1049377, 1499110, 2098754, 2998220, 4197508, 5246885, 10493770, 20987540]

約数ペア:

[(1, 20987540), (2, 10493770), (4, 5246885), (5, 4197508), (7, 2998220), (10, 2098754), (14, 1499110), (20, 1049377), (28, 749555), (35, 599644), (70, 299822), (140, 149911)]