21067510

素因数分解:

$2^1\times 5^1\times {\mathrm{509}}^1\times {\mathrm{4139}}^1$

素因数の和:4655

約数の個数: 16

約数和(自身を含む): 38005200

約数和(自身を除く): 16937690

約数列:

[1, 2, 5, 10, 509, 1018, 2545, 4139, 5090, 8278, 20695, 41390, 2106751, 4213502, 10533755, 21067510]

約数ペア:

[(1, 21067510), (2, 10533755), (5, 4213502), (10, 2106751), (509, 41390), (1018, 20695), (2545, 8278), (4139, 5090)]