2021697680

素因数分解:

$2^4\times 5^1\times {\mathrm{25271221}}^1$

素因数の和:25271234

約数の個数: 20

約数和(自身を含む): 4700447292

約数和(自身を除く): 2678749612

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 25271221, 50542442, 101084884, 126356105, 202169768, 252712210, 404339536, 505424420, 1010848840, 2021697680]

約数ペア:

[(1, 2021697680), (2, 1010848840), (4, 505424420), (5, 404339536), (8, 252712210), (10, 202169768), (16, 126356105), (20, 101084884), (40, 50542442), (80, 25271221)]