2489395280

素因数分解:

$2^4\times 5^1\times {\mathrm{31117441}}^1$

素因数の和:31117454

約数の個数: 20

約数和(自身を含む): 5787844212

約数和(自身を除く): 3298448932

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 31117441, 62234882, 124469764, 155587205, 248939528, 311174410, 497879056, 622348820, 1244697640, 2489395280]

約数ペア:

[(1, 2489395280), (2, 1244697640), (4, 622348820), (5, 497879056), (8, 311174410), (10, 248939528), (16, 155587205), (20, 124469764), (40, 62234882), (80, 31117441)]