21879604

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{127207}}^1$

素因数の和:127254

約数の個数: 12

約数和(自身を含む): 39180064

約数和(自身を除く): 17300460

約数列:

[1, 2, 4, 43, 86, 172, 127207, 254414, 508828, 5469901, 10939802, 21879604]

約数ペア:

[(1, 21879604), (2, 10939802), (4, 5469901), (43, 508828), (86, 254414), (172, 127207)]