20688670

素因数分解:

$2^1\times 5^1\times {\mathrm{907}}^1\times {\mathrm{2281}}^1$

素因数の和:3195

約数の個数: 16

約数和(自身を含む): 37297008

約数和(自身を除く): 16608338

約数列:

[1, 2, 5, 10, 907, 1814, 2281, 4535, 4562, 9070, 11405, 22810, 2068867, 4137734, 10344335, 20688670]

約数ペア:

[(1, 20688670), (2, 10344335), (5, 4137734), (10, 2068867), (907, 22810), (1814, 11405), (2281, 9070), (4535, 4562)]