21032080

素因数分解:

$2^4\times 5^1\times {\mathrm{262901}}^1$

素因数の和:262914

約数の個数: 20

約数和(自身を含む): 48899772

約数和(自身を除く): 27867692

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 262901, 525802, 1051604, 1314505, 2103208, 2629010, 4206416, 5258020, 10516040, 21032080]

約数ペア:

[(1, 21032080), (2, 10516040), (4, 5258020), (5, 4206416), (8, 2629010), (10, 2103208), (16, 1314505), (20, 1051604), (40, 525802), (80, 262901)]