21986999956

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{289302631}}^1$

素因数の和:289302654

約数の個数: 12

約数和(自身を含む): 40502368480

約数和(自身を除く): 18515368524

約数列:

[1, 2, 4, 19, 38, 76, 289302631, 578605262, 1157210524, 5496749989, 10993499978, 21986999956]

約数ペア:

[(1, 21986999956), (2, 10993499978), (4, 5496749989), (19, 1157210524), (38, 578605262), (76, 289302631)]