20379280

素因数分解:

$2^4\times 5^1\times {\mathrm{254741}}^1$

素因数の和:254754

約数の個数: 20

約数和(自身を含む): 47382012

約数和(自身を除く): 27002732

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 254741, 509482, 1018964, 1273705, 2037928, 2547410, 4075856, 5094820, 10189640, 20379280]

約数ペア:

[(1, 20379280), (2, 10189640), (4, 5094820), (5, 4075856), (8, 2547410), (10, 2037928), (16, 1273705), (20, 1018964), (40, 509482), (80, 254741)]