16821901

素因数分解:

${\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{233}}^1$

素因数の和:372

約数の個数: 16

約数和(自身を含む): 18285696

約数和(自身を除く): 1463795

約数列:

[1, 23, 43, 73, 233, 989, 1679, 3139, 5359, 10019, 17009, 72197, 230437, 391207, 731387, 16821901]

約数ペア:

[(1, 16821901), (23, 731387), (43, 391207), (73, 230437), (233, 72197), (989, 17009), (1679, 10019), (3139, 5359)]