20403721828

素因数分解:

$2^2\times 7^1\times {\mathrm{728704351}}^1$

素因数の和:728704362

約数の個数: 12

約数和(自身を含む): 40807443712

約数和(自身を除く): 20403721884

約数列:

[1, 2, 4, 7, 14, 28, 728704351, 1457408702, 2914817404, 5100930457, 10201860914, 20403721828]

約数ペア:

[(1, 20403721828), (2, 10201860914), (4, 5100930457), (7, 2914817404), (14, 1457408702), (28, 728704351)]