55217720

素因数分解:

$2^3\times 5^1\times {\mathrm{1380443}}^1$

素因数の和:1380454

約数の個数: 16

約数和(自身を含む): 124239960

約数和(自身を除く): 69022240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1380443, 2760886, 5521772, 6902215, 11043544, 13804430, 27608860, 55217720]

約数ペア:

[(1, 55217720), (2, 27608860), (4, 13804430), (5, 11043544), (8, 6902215), (10, 5521772), (20, 2760886), (40, 1380443)]