21087185

素因数分解:

$5^1\times 7^1\times {\mathrm{643}}^1\times {\mathrm{937}}^1$

素因数の和:1592

約数の個数: 16

約数和(自身を含む): 28995456

約数和(自身を除く): 7908271

約数列:

[1, 5, 7, 35, 643, 937, 3215, 4501, 4685, 6559, 22505, 32795, 602491, 3012455, 4217437, 21087185]

約数ペア:

[(1, 21087185), (5, 4217437), (7, 3012455), (35, 602491), (643, 32795), (937, 22505), (3215, 6559), (4501, 4685)]