640081510

素因数分解:

$2^1\times 5^1\times {\mathrm{199}}^1\times {\mathrm{263}}^1\times {\mathrm{1223}}^1$

素因数の和:1692

約数の個数: 32

約数和(自身を含む): 1163289600

約数和(自身を除く): 523208090

約数列:

[1, 2, 5, 10, 199, 263, 398, 526, 995, 1223, 1315, 1990, 2446, 2630, 6115, 12230, 52337, 104674, 243377, 261685, 321649, 486754, 523370, 643298, 1216885, 1608245, 2433770, 3216490, 64008151, 128016302, 320040755, 640081510]

約数ペア:

[(1, 640081510), (2, 320040755), (5, 128016302), (10, 64008151), (199, 3216490), (263, 2433770), (398, 1608245), (526, 1216885), (995, 643298), (1223, 523370), (1315, 486754), (1990, 321649), (2446, 261685), (2630, 243377), (6115, 104674), (12230, 52337)]