64698740

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{16421}}^1$

素因数の和:16627

約数の個数: 24

約数和(自身を含む): 136565352

約数和(自身を除く): 71866612

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 16421, 32842, 65684, 82105, 164210, 328420, 3234937, 6469874, 12939748, 16174685, 32349370, 64698740]

約数ペア:

[(1, 64698740), (2, 32349370), (4, 16174685), (5, 12939748), (10, 6469874), (20, 3234937), (197, 328420), (394, 164210), (788, 82105), (985, 65684), (1970, 32842), (3940, 16421)]