259543280

素因数分解:

$2^4\times 5^1\times {\mathrm{3244291}}^1$

素因数の和:3244304

約数の個数: 20

約数和(自身を含む): 603438312

約数和(自身を除く): 343895032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3244291, 6488582, 12977164, 16221455, 25954328, 32442910, 51908656, 64885820, 129771640, 259543280]

約数ペア:

[(1, 259543280), (2, 129771640), (4, 64885820), (5, 51908656), (8, 32442910), (10, 25954328), (16, 16221455), (20, 12977164), (40, 6488582), (80, 3244291)]