25585520

素因数分解:

$2^4\times 5^1\times {\mathrm{319819}}^1$

素因数の和:319832

約数の個数: 20

約数和(自身を含む): 59486520

約数和(自身を除く): 33901000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 319819, 639638, 1279276, 1599095, 2558552, 3198190, 5117104, 6396380, 12792760, 25585520]

約数ペア:

[(1, 25585520), (2, 12792760), (4, 6396380), (5, 5117104), (8, 3198190), (10, 2558552), (16, 1599095), (20, 1279276), (40, 639638), (80, 319819)]