20765685

素因数分解:

$3^1\times 5^1\times {\mathrm{643}}^1\times {\mathrm{2153}}^1$

素因数の和:2804

約数の個数: 16

約数和(自身を含む): 33292224

約数和(自身を除く): 12526539

約数列:

[1, 3, 5, 15, 643, 1929, 2153, 3215, 6459, 9645, 10765, 32295, 1384379, 4153137, 6921895, 20765685]

約数ペア:

[(1, 20765685), (3, 6921895), (5, 4153137), (15, 1384379), (643, 32295), (1929, 10765), (2153, 9645), (3215, 6459)]