25630840

素因数分解:

$2^3\times 5^1\times {\mathrm{640771}}^1$

素因数の和:640782

約数の個数: 16

約数和(自身を含む): 57669480

約数和(自身を除く): 32038640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 640771, 1281542, 2563084, 3203855, 5126168, 6407710, 12815420, 25630840]

約数ペア:

[(1, 25630840), (2, 12815420), (4, 6407710), (5, 5126168), (8, 3203855), (10, 2563084), (20, 1281542), (40, 640771)]