855280

素因数分解:

$2^4\times 5^1\times {\mathrm{10691}}^1$

素因数の和:10704

約数の個数: 20

約数和(自身を含む): 1988712

約数和(自身を除く): 1133432

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 10691, 21382, 42764, 53455, 85528, 106910, 171056, 213820, 427640, 855280]

約数ペア:

[(1, 855280), (2, 427640), (4, 213820), (5, 171056), (8, 106910), (10, 85528), (16, 53455), (20, 42764), (40, 21382), (80, 10691)]