1644808640

素因数分解:

$2^6\times 5^1\times {\mathrm{5140027}}^1$

素因数の和:5140044

約数の個数: 28

約数和(自身を含む): 3916701336

約数和(自身を除く): 2271892696

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 5140027, 10280054, 20560108, 25700135, 41120216, 51400270, 82240432, 102800540, 164480864, 205601080, 328961728, 411202160, 822404320, 1644808640]

約数ペア:

[(1, 1644808640), (2, 822404320), (4, 411202160), (5, 328961728), (8, 205601080), (10, 164480864), (16, 102800540), (20, 82240432), (32, 51400270), (40, 41120216), (64, 25700135), (80, 20560108), (160, 10280054), (320, 5140027)]