21043340

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{24469}}^1$

素因数の和:24521

約数の個数: 24

約数和(自身を含む): 45220560

約数和(自身を除く): 24177220

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 24469, 48938, 97876, 122345, 244690, 489380, 1052167, 2104334, 4208668, 5260835, 10521670, 21043340]

約数ペア:

[(1, 21043340), (2, 10521670), (4, 5260835), (5, 4208668), (10, 2104334), (20, 1052167), (43, 489380), (86, 244690), (172, 122345), (215, 97876), (430, 48938), (860, 24469)]