19992860

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{21269}}^1$

素因数の和:21325

約数の個数: 24

約数和(自身を含む): 42880320

約数和(自身を除く): 22887460

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 21269, 42538, 85076, 106345, 212690, 425380, 999643, 1999286, 3998572, 4998215, 9996430, 19992860]

約数ペア:

[(1, 19992860), (2, 9996430), (4, 4998215), (5, 3998572), (10, 1999286), (20, 999643), (47, 425380), (94, 212690), (188, 106345), (235, 85076), (470, 42538), (940, 21269)]