21791710

素因数分解:

$2^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{21157}}^1$

素因数の和:21267

約数の個数: 16

約数和(自身を含む): 39607776

約数和(自身を除く): 17816066

約数列:

[1, 2, 5, 10, 103, 206, 515, 1030, 21157, 42314, 105785, 211570, 2179171, 4358342, 10895855, 21791710]

約数ペア:

[(1, 21791710), (2, 10895855), (5, 4358342), (10, 2179171), (103, 211570), (206, 105785), (515, 42314), (1030, 21157)]