2811820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{12781}}^1$

素因数の和:12801

約数の個数: 24

約数和(自身を含む): 6442128

約数和(自身を除く): 3630308

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 12781, 25562, 51124, 63905, 127810, 140591, 255620, 281182, 562364, 702955, 1405910, 2811820]

約数ペア:

[(1, 2811820), (2, 1405910), (4, 702955), (5, 562364), (10, 281182), (11, 255620), (20, 140591), (22, 127810), (44, 63905), (55, 51124), (110, 25562), (220, 12781)]