38991980

素因数分解:

$2^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{4441}}^1$

素因数の和:4889

約数の個数: 24

約数和(自身を含む): 82088160

約数和(自身を除く): 43096180

約数列:

[1, 2, 4, 5, 10, 20, 439, 878, 1756, 2195, 4390, 4441, 8780, 8882, 17764, 22205, 44410, 88820, 1949599, 3899198, 7798396, 9747995, 19495990, 38991980]

約数ペア:

[(1, 38991980), (2, 19495990), (4, 9747995), (5, 7798396), (10, 3899198), (20, 1949599), (439, 88820), (878, 44410), (1756, 22205), (2195, 17764), (4390, 8882), (4441, 8780)]