639844556

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{12304703}}^1$

素因数の和:12304720

約数の個数: 12

約数和(自身を含む): 1205860992

約数和(自身を除く): 566016436

約数列:

[1, 2, 4, 13, 26, 52, 12304703, 24609406, 49218812, 159961139, 319922278, 639844556]

約数ペア:

[(1, 639844556), (2, 319922278), (4, 159961139), (13, 49218812), (26, 24609406), (52, 12304703)]