25590280

素因数分解:

$2^3\times 5^1\times {\mathrm{639757}}^1$

素因数の和:639768

約数の個数: 16

約数和(自身を含む): 57578220

約数和(自身を除く): 31987940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 639757, 1279514, 2559028, 3198785, 5118056, 6397570, 12795140, 25590280]

約数ペア:

[(1, 25590280), (2, 12795140), (4, 6397570), (5, 5118056), (8, 3198785), (10, 2559028), (20, 1279514), (40, 639757)]