18787420

素因数分解:

$2^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{6221}}^1$

素因数の和:6381

約数の個数: 24

約数和(自身を含む): 39721248

約数和(自身を除く): 20933828

約数列:

[1, 2, 4, 5, 10, 20, 151, 302, 604, 755, 1510, 3020, 6221, 12442, 24884, 31105, 62210, 124420, 939371, 1878742, 3757484, 4696855, 9393710, 18787420]

約数ペア:

[(1, 18787420), (2, 9393710), (4, 4696855), (5, 3757484), (10, 1878742), (20, 939371), (151, 124420), (302, 62210), (604, 31105), (755, 24884), (1510, 12442), (3020, 6221)]