20598505

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1\times {\mathrm{643}}^1$

素因数の和:840

約数の個数: 16

約数和(自身を含む): 25502400

約数和(自身を除く): 4903895

約数列:

[1, 5, 43, 149, 215, 643, 745, 3215, 6407, 27649, 32035, 95807, 138245, 479035, 4119701, 20598505]

約数ペア:

[(1, 20598505), (5, 4119701), (43, 479035), (149, 138245), (215, 95807), (643, 32035), (745, 27649), (3215, 6407)]