19500790

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{21911}}^1$

素因数の和:22007

約数の個数: 16

約数和(自身を含む): 35497440

約数和(自身を除く): 15996650

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 21911, 43822, 109555, 219110, 1950079, 3900158, 9750395, 19500790]

約数ペア:

[(1, 19500790), (2, 9750395), (5, 3900158), (10, 1950079), (89, 219110), (178, 109555), (445, 43822), (890, 21911)]