64673680

素因数分解:

$2^4\times 5^1\times {\mathrm{808421}}^1$

素因数の和:808434

約数の個数: 20

約数和(自身を含む): 150366492

約数和(自身を除く): 85692812

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 808421, 1616842, 3233684, 4042105, 6467368, 8084210, 12934736, 16168420, 32336840, 64673680]

約数ペア:

[(1, 64673680), (2, 32336840), (4, 16168420), (5, 12934736), (8, 8084210), (10, 6467368), (16, 4042105), (20, 3233684), (40, 1616842), (80, 808421)]