81408420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{452269}}^1$

素因数の和:452284

約数の個数: 36

約数和(自身を含む): 246939420

約数和(自身を除く): 165531000

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 452269, 904538, 1356807, 1809076, 2261345, 2713614, 4070421, 4522690, 5427228, 6784035, 8140842, 9045380, 13568070, 16281684, 20352105, 27136140, 40704210, 81408420]

約数ペア:

[(1, 81408420), (2, 40704210), (3, 27136140), (4, 20352105), (5, 16281684), (6, 13568070), (9, 9045380), (10, 8140842), (12, 6784035), (15, 5427228), (18, 4522690), (20, 4070421), (30, 2713614), (36, 2261345), (45, 1809076), (60, 1356807), (90, 904538), (180, 452269)]