21497776

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{32771}}^1$

素因数の和:32820

約数の個数: 20

約数和(自身を含む): 42669144

約数和(自身を除く): 21171368

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 32771, 65542, 131084, 262168, 524336, 1343611, 2687222, 5374444, 10748888, 21497776]

約数ペア:

[(1, 21497776), (2, 10748888), (4, 5374444), (8, 2687222), (16, 1343611), (41, 524336), (82, 262168), (164, 131084), (328, 65542), (656, 32771)]