51170480

素因数分解:

$2^4\times 5^1\times {\mathrm{639631}}^1$

素因数の和:639644

約数の個数: 20

約数和(自身を含む): 118971552

約数和(自身を除く): 67801072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 639631, 1279262, 2558524, 3198155, 5117048, 6396310, 10234096, 12792620, 25585240, 51170480]

約数ペア:

[(1, 51170480), (2, 25585240), (4, 12792620), (5, 10234096), (8, 6396310), (10, 5117048), (16, 3198155), (20, 2558524), (40, 1279262), (80, 639631)]