20327540

素因数分解:

$2^2\times 5^1\times {\mathrm{281}}^1\times {\mathrm{3617}}^1$

素因数の和:3907

約数の個数: 24

約数和(自身を含む): 42851592

約数和(自身を除く): 22524052

約数列:

[1, 2, 4, 5, 10, 20, 281, 562, 1124, 1405, 2810, 3617, 5620, 7234, 14468, 18085, 36170, 72340, 1016377, 2032754, 4065508, 5081885, 10163770, 20327540]

約数ペア:

[(1, 20327540), (2, 10163770), (4, 5081885), (5, 4065508), (10, 2032754), (20, 1016377), (281, 72340), (562, 36170), (1124, 18085), (1405, 14468), (2810, 7234), (3617, 5620)]