21253710

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{708457}}^1$

素因数の和:708467

約数の個数: 16

約数和(自身を含む): 51008976

約数和(自身を除く): 29755266

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 708457, 1416914, 2125371, 3542285, 4250742, 7084570, 10626855, 21253710]

約数ペア:

[(1, 21253710), (2, 10626855), (3, 7084570), (5, 4250742), (6, 3542285), (10, 2125371), (15, 1416914), (30, 708457)]