138561781

素因数分解:

${\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:253

約数の個数: 32

約数和(自身を含む): 158906880

約数和(自身を除く): 20345099

約数列:

[1, 17, 37, 43, 47, 109, 629, 731, 799, 1591, 1739, 1853, 2021, 4033, 4687, 5123, 27047, 29563, 34357, 68561, 74777, 79679, 87091, 173419, 189551, 220289, 1271209, 2948123, 3222367, 3744913, 8150693, 138561781]

約数ペア:

[(1, 138561781), (17, 8150693), (37, 3744913), (43, 3222367), (47, 2948123), (109, 1271209), (629, 220289), (731, 189551), (799, 173419), (1591, 87091), (1739, 79679), (1853, 74777), (2021, 68561), (4033, 34357), (4687, 29563), (5123, 27047)]