21507540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{358459}}^1$

素因数の和:358471

約数の個数: 24

約数和(自身を含む): 60221280

約数和(自身を除く): 38713740

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 358459, 716918, 1075377, 1433836, 1792295, 2150754, 3584590, 4301508, 5376885, 7169180, 10753770, 21507540]

約数ペア:

[(1, 21507540), (2, 10753770), (3, 7169180), (4, 5376885), (5, 4301508), (6, 3584590), (10, 2150754), (12, 1792295), (15, 1433836), (20, 1075377), (30, 716918), (60, 358459)]