28205678

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{2089}}^1$

素因数の和:2291

約数の個数: 16

約数和(自身を含む): 43589040

約数和(自身を除く): 15383362

約数列:

[1, 2, 43, 86, 157, 314, 2089, 4178, 6751, 13502, 89827, 179654, 327973, 655946, 14102839, 28205678]

約数ペア:

[(1, 28205678), (2, 14102839), (43, 655946), (86, 327973), (157, 179654), (314, 89827), (2089, 13502), (4178, 6751)]