21015956

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{8599}}^1$

素因数の和:8663

約数の個数: 24

約数和(自身を含む): 40454400

約数和(自身を除く): 19438444

約数列:

[1, 2, 4, 13, 26, 47, 52, 94, 188, 611, 1222, 2444, 8599, 17198, 34396, 111787, 223574, 404153, 447148, 808306, 1616612, 5253989, 10507978, 21015956]

約数ペア:

[(1, 21015956), (2, 10507978), (4, 5253989), (13, 1616612), (26, 808306), (47, 447148), (52, 404153), (94, 223574), (188, 111787), (611, 34396), (1222, 17198), (2444, 8599)]