21048520

素因数分解:

$2^3\times 5^1\times {\mathrm{526213}}^1$

素因数の和:526224

約数の個数: 16

約数和(自身を含む): 47359260

約数和(自身を除く): 26310740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 526213, 1052426, 2104852, 2631065, 4209704, 5262130, 10524260, 21048520]

約数ペア:

[(1, 21048520), (2, 10524260), (4, 5262130), (5, 4209704), (8, 2631065), (10, 2104852), (20, 1052426), (40, 526213)]