81529060

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{29327}}^1$

素因数の和:29475

約数の個数: 24

約数和(自身を含む): 172448640

約数和(自身を除く): 90919580

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 29327, 58654, 117308, 146635, 293270, 586540, 4076453, 8152906, 16305812, 20382265, 40764530, 81529060]

約数ペア:

[(1, 81529060), (2, 40764530), (4, 20382265), (5, 16305812), (10, 8152906), (20, 4076453), (139, 586540), (278, 293270), (556, 146635), (695, 117308), (1390, 58654), (2780, 29327)]