16720342

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{440009}}^1$

素因数の和:440030

約数の個数: 8

約数和(自身を含む): 26400600

約数和(自身を除く): 9680258

約数列:

[1, 2, 19, 38, 440009, 880018, 8360171, 16720342]

約数ペア:

[(1, 16720342), (2, 8360171), (19, 880018), (38, 440009)]