51713680

素因数分解:

$2^4\times 5^1\times {\mathrm{646421}}^1$

素因数の和:646434

約数の個数: 20

約数和(自身を含む): 120234492

約数和(自身を除く): 68520812

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 646421, 1292842, 2585684, 3232105, 5171368, 6464210, 10342736, 12928420, 25856840, 51713680]

約数ペア:

[(1, 51713680), (2, 25856840), (4, 12928420), (5, 10342736), (8, 6464210), (10, 5171368), (16, 3232105), (20, 2585684), (40, 1292842), (80, 646421)]