64193680

素因数分解:

$2^4\times 5^1\times {\mathrm{802421}}^1$

素因数の和:802434

約数の個数: 20

約数和(自身を含む): 149250492

約数和(自身を除く): 85056812

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 802421, 1604842, 3209684, 4012105, 6419368, 8024210, 12838736, 16048420, 32096840, 64193680]

約数ペア:

[(1, 64193680), (2, 32096840), (4, 16048420), (5, 12838736), (8, 8024210), (10, 6419368), (16, 4012105), (20, 3209684), (40, 1604842), (80, 802421)]