21947536

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{105517}}^1$

素因数の和:105538

約数の個数: 20

約数和(自身を含む): 45794812

約数和(自身を除く): 23847276

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 105517, 211034, 422068, 844136, 1371721, 1688272, 2743442, 5486884, 10973768, 21947536]

約数ペア:

[(1, 21947536), (2, 10973768), (4, 5486884), (8, 2743442), (13, 1688272), (16, 1371721), (26, 844136), (52, 422068), (104, 211034), (208, 105517)]