66921967

素因数分解:

$7^1\times {\mathrm{109}}^1\times {\mathrm{139}}^1\times {\mathrm{631}}^1$

素因数の和:886

約数の個数: 16

約数和(自身を含む): 77862400

約数和(自身を除く): 10940433

約数列:

[1, 7, 109, 139, 631, 763, 973, 4417, 15151, 68779, 87709, 106057, 481453, 613963, 9560281, 66921967]

約数ペア:

[(1, 66921967), (7, 9560281), (109, 613963), (139, 481453), (631, 106057), (763, 87709), (973, 68779), (4417, 15151)]