51105520

素因数分解:

$2^4\times 5^1\times {\mathrm{638819}}^1$

素因数の和:638832

約数の個数: 20

約数和(自身を含む): 118820520

約数和(自身を除く): 67715000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 638819, 1277638, 2555276, 3194095, 5110552, 6388190, 10221104, 12776380, 25552760, 51105520]

約数ペア:

[(1, 51105520), (2, 25552760), (4, 12776380), (5, 10221104), (8, 6388190), (10, 5110552), (16, 3194095), (20, 2555276), (40, 1277638), (80, 638819)]