163256840

素因数分解:

$2^3\times 5^1\times {\mathrm{4081421}}^1$

素因数の和:4081432

約数の個数: 16

約数和(自身を含む): 367327980

約数和(自身を除く): 204071140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4081421, 8162842, 16325684, 20407105, 32651368, 40814210, 81628420, 163256840]

約数ペア:

[(1, 163256840), (2, 81628420), (4, 40814210), (5, 32651368), (8, 20407105), (10, 16325684), (20, 8162842), (40, 4081421)]