21490270

素因数分解:

$2^1\times 5^1\times {\mathrm{149}}^1\times {\mathrm{14423}}^1$

素因数の和:14579

約数の個数: 16

約数和(自身を含む): 38944800

約数和(自身を除く): 17454530

約数列:

[1, 2, 5, 10, 149, 298, 745, 1490, 14423, 28846, 72115, 144230, 2149027, 4298054, 10745135, 21490270]

約数ペア:

[(1, 21490270), (2, 10745135), (5, 4298054), (10, 2149027), (149, 144230), (298, 72115), (745, 28846), (1490, 14423)]