405152080

素因数分解:

$2^4\times 5^1\times {\mathrm{5064401}}^1$

素因数の和:5064414

約数の個数: 20

約数和(自身を含む): 941978772

約数和(自身を除く): 536826692

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 5064401, 10128802, 20257604, 25322005, 40515208, 50644010, 81030416, 101288020, 202576040, 405152080]

約数ペア:

[(1, 405152080), (2, 202576040), (4, 101288020), (5, 81030416), (8, 50644010), (10, 40515208), (16, 25322005), (20, 20257604), (40, 10128802), (80, 5064401)]