20998510

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{161527}}^1$

素因数の和:161547

約数の個数: 16

約数和(自身を含む): 40705056

約数和(自身を除く): 19706546

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 161527, 323054, 807635, 1615270, 2099851, 4199702, 10499255, 20998510]

約数ペア:

[(1, 20998510), (2, 10499255), (5, 4199702), (10, 2099851), (13, 1615270), (26, 807635), (65, 323054), (130, 161527)]