18616040

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{2087}}^1$

素因数の和:2321

約数の個数: 32

約数和(自身を含む): 42094080

約数和(自身を除く): 23478040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2087, 2230, 4174, 4460, 8348, 8920, 10435, 16696, 20870, 41740, 83480, 465401, 930802, 1861604, 2327005, 3723208, 4654010, 9308020, 18616040]

約数ペア:

[(1, 18616040), (2, 9308020), (4, 4654010), (5, 3723208), (8, 2327005), (10, 1861604), (20, 930802), (40, 465401), (223, 83480), (446, 41740), (892, 20870), (1115, 16696), (1784, 10435), (2087, 8920), (2230, 8348), (4174, 4460)]