21917659

素因数分解:

${\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{193}}^1$

素因数の和:394

約数の個数: 16

約数和(自身を含む): 23900800

約数和(自身を除く): 1983141

約数列:

[1, 19, 43, 139, 193, 817, 2641, 3667, 5977, 8299, 26827, 113563, 157681, 509713, 1153561, 21917659]

約数ペア:

[(1, 21917659), (19, 1153561), (43, 509713), (139, 157681), (193, 113563), (817, 26827), (2641, 8299), (3667, 5977)]