28681053790

素因数分解:

$2^1\times 5^1\times {\mathrm{1997}}^1\times {\mathrm{1436207}}^1$

素因数の和:1438211

約数の個数: 16

約数和(自身を含む): 51651784512

約数和(自身を除く): 22970730722

約数列:

[1, 2, 5, 10, 1997, 3994, 9985, 19970, 1436207, 2872414, 7181035, 14362070, 2868105379, 5736210758, 14340526895, 28681053790]

約数ペア:

[(1, 28681053790), (2, 14340526895), (5, 5736210758), (10, 2868105379), (1997, 14362070), (3994, 7181035), (9985, 2872414), (19970, 1436207)]