20448520

素因数分解:

$2^3\times 5^1\times {\mathrm{511213}}^1$

素因数の和:511224

約数の個数: 16

約数和(自身を含む): 46009260

約数和(自身を除く): 25560740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 511213, 1022426, 2044852, 2556065, 4089704, 5112130, 10224260, 20448520]

約数ペア:

[(1, 20448520), (2, 10224260), (4, 5112130), (5, 4089704), (8, 2556065), (10, 2044852), (20, 1022426), (40, 511213)]