25585240

素因数分解:

$2^3\times 5^1\times {\mathrm{639631}}^1$

素因数の和:639642

約数の個数: 16

約数和(自身を含む): 57566880

約数和(自身を除く): 31981640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 639631, 1279262, 2558524, 3198155, 5117048, 6396310, 12792620, 25585240]

約数ペア:

[(1, 25585240), (2, 12792620), (4, 6396310), (5, 5117048), (8, 3198155), (10, 2558524), (20, 1279262), (40, 639631)]