81055600

素因数分解:

$2^4\times 5^2\times {\mathrm{202639}}^1$

素因数の和:202657

約数の個数: 30

約数和(自身を含む): 194737040

約数和(自身を除く): 113681440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 202639, 405278, 810556, 1013195, 1621112, 2026390, 3242224, 4052780, 5065975, 8105560, 10131950, 16211120, 20263900, 40527800, 81055600]

約数ペア:

[(1, 81055600), (2, 40527800), (4, 20263900), (5, 16211120), (8, 10131950), (10, 8105560), (16, 5065975), (20, 4052780), (25, 3242224), (40, 2026390), (50, 1621112), (80, 1013195), (100, 810556), (200, 405278), (400, 202639)]