21090356

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{32749}}^1$

素因数の和:32783

約数の個数: 24

約数和(自身を含む): 44016000

約数和(自身を除く): 22925644

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644, 32749, 65498, 130996, 229243, 458486, 753227, 916972, 1506454, 3012908, 5272589, 10545178, 21090356]

約数ペア:

[(1, 21090356), (2, 10545178), (4, 5272589), (7, 3012908), (14, 1506454), (23, 916972), (28, 753227), (46, 458486), (92, 229243), (161, 130996), (322, 65498), (644, 32749)]