19905899

素因数分解:

${\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{167}}^1\times {\mathrm{173}}^1$

素因数の和:406

約数の個数: 16

約数和(自身を含む): 22099392

約数和(自身を除く): 2193493

約数列:

[1, 13, 53, 167, 173, 689, 2171, 2249, 8851, 9169, 28891, 115063, 119197, 375583, 1531223, 19905899]

約数ペア:

[(1, 19905899), (13, 1531223), (53, 375583), (167, 119197), (173, 115063), (689, 28891), (2171, 9169), (2249, 8851)]