19857988

素因数分解:

$2^2\times {\mathrm{103}}^1\times {\mathrm{157}}^1\times {\mathrm{307}}^1$

素因数の和:571

約数の個数: 24

約数和(自身を含む): 35427392

約数和(自身を除く): 15569404

約数列:

[1, 2, 4, 103, 157, 206, 307, 314, 412, 614, 628, 1228, 16171, 31621, 32342, 48199, 63242, 64684, 96398, 126484, 192796, 4964497, 9928994, 19857988]

約数ペア:

[(1, 19857988), (2, 9928994), (4, 4964497), (103, 192796), (157, 126484), (206, 96398), (307, 64684), (314, 63242), (412, 48199), (614, 32342), (628, 31621), (1228, 16171)]