20881660

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{24281}}^1$

素因数の和:24333

約数の個数: 24

約数和(自身を含む): 44873136

約数和(自身を除く): 23991476

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 24281, 48562, 97124, 121405, 242810, 485620, 1044083, 2088166, 4176332, 5220415, 10440830, 20881660]

約数ペア:

[(1, 20881660), (2, 10440830), (4, 5220415), (5, 4176332), (10, 2088166), (20, 1044083), (43, 485620), (86, 242810), (172, 121405), (215, 97124), (430, 48562), (860, 24281)]