12438520

素因数分解:

$2^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{2087}}^1$

素因数の和:2247

約数の個数: 32

約数和(自身を含む): 28188000

約数和(自身を除く): 15749480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 149, 298, 596, 745, 1192, 1490, 2087, 2980, 4174, 5960, 8348, 10435, 16696, 20870, 41740, 83480, 310963, 621926, 1243852, 1554815, 2487704, 3109630, 6219260, 12438520]

約数ペア:

[(1, 12438520), (2, 6219260), (4, 3109630), (5, 2487704), (8, 1554815), (10, 1243852), (20, 621926), (40, 310963), (149, 83480), (298, 41740), (596, 20870), (745, 16696), (1192, 10435), (1490, 8348), (2087, 5960), (2980, 4174)]