18917180

素因数分解:

$2^2\times 5^1\times {\mathrm{613}}^1\times {\mathrm{1543}}^1$

素因数の和:2165

約数の個数: 24

約数和(自身を含む): 39816672

約数和(自身を除く): 20899492

約数列:

[1, 2, 4, 5, 10, 20, 613, 1226, 1543, 2452, 3065, 3086, 6130, 6172, 7715, 12260, 15430, 30860, 945859, 1891718, 3783436, 4729295, 9458590, 18917180]

約数ペア:

[(1, 18917180), (2, 9458590), (4, 4729295), (5, 3783436), (10, 1891718), (20, 945859), (613, 30860), (1226, 15430), (1543, 12260), (2452, 7715), (3065, 6172), (3086, 6130)]