18612517

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1$

素因数の和:241

約数の個数: 32

約数和(自身を含む): 24514560

約数和(自身を除く): 5902043

約数列:

[1, 7, 11, 37, 47, 77, 139, 259, 329, 407, 517, 973, 1529, 1739, 2849, 3619, 5143, 6533, 10703, 12173, 19129, 36001, 45731, 56573, 71863, 133903, 241721, 396011, 503041, 1692047, 2658931, 18612517]

約数ペア:

[(1, 18612517), (7, 2658931), (11, 1692047), (37, 503041), (47, 396011), (77, 241721), (139, 133903), (259, 71863), (329, 56573), (407, 45731), (517, 36001), (973, 19129), (1529, 12173), (1739, 10703), (2849, 6533), (3619, 5143)]