21879368

素因数分解:

$2^3\times 7^1\times {\mathrm{390703}}^1$

素因数の和:390716

約数の個数: 16

約数和(自身を含む): 46884480

約数和(自身を除く): 25005112

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 390703, 781406, 1562812, 2734921, 3125624, 5469842, 10939684, 21879368]

約数ペア:

[(1, 21879368), (2, 10939684), (4, 5469842), (7, 3125624), (8, 2734921), (14, 1562812), (28, 781406), (56, 390703)]