21949616

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{105527}}^1$

素因数の和:105548

約数の個数: 20

約数和(自身を含む): 45799152

約数和(自身を除く): 23849536

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 105527, 211054, 422108, 844216, 1371851, 1688432, 2743702, 5487404, 10974808, 21949616]

約数ペア:

[(1, 21949616), (2, 10974808), (4, 5487404), (8, 2743702), (13, 1688432), (16, 1371851), (26, 844216), (52, 422108), (104, 211054), (208, 105527)]