19968557

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{5413}}^1$

素因数の和:5468

約数の個数: 16

約数和(自身を含む): 24947712

約数和(自身を除く): 4979155

約数列:

[1, 7, 17, 31, 119, 217, 527, 3689, 5413, 37891, 92021, 167803, 644147, 1174621, 2852651, 19968557]

約数ペア:

[(1, 19968557), (7, 2852651), (17, 1174621), (31, 644147), (119, 167803), (217, 92021), (527, 37891), (3689, 5413)]