21496517

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{4201}}^1$

素因数の和:4268

約数の個数: 16

約数和(自身を含む): 26623872

約数和(自身を除く): 5127355

約数列:

[1, 7, 17, 43, 119, 301, 731, 4201, 5117, 29407, 71417, 180643, 499919, 1264501, 3070931, 21496517]

約数ペア:

[(1, 21496517), (7, 3070931), (17, 1264501), (43, 499919), (119, 180643), (301, 71417), (731, 29407), (4201, 5117)]