20353040

素因数分解:

$2^4\times 5^1\times {\mathrm{254413}}^1$

素因数の和:254426

約数の個数: 20

約数和(自身を含む): 47321004

約数和(自身を除く): 26967964

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 254413, 508826, 1017652, 1272065, 2035304, 2544130, 4070608, 5088260, 10176520, 20353040]

約数ペア:

[(1, 20353040), (2, 10176520), (4, 5088260), (5, 4070608), (8, 2544130), (10, 2035304), (16, 1272065), (20, 1017652), (40, 508826), (80, 254413)]