18784419

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1$

素因数の和:227

約数の個数: 32

約数和(自身を含む): 27316224

約数和(自身を除く): 8531805

約数列:

[1, 3, 31, 37, 53, 93, 103, 111, 159, 309, 1147, 1643, 1961, 3193, 3441, 3811, 4929, 5459, 5883, 9579, 11433, 16377, 60791, 118141, 169229, 182373, 201983, 354423, 507687, 605949, 6261473, 18784419]

約数ペア:

[(1, 18784419), (3, 6261473), (31, 605949), (37, 507687), (53, 354423), (93, 201983), (103, 182373), (111, 169229), (159, 118141), (309, 60791), (1147, 16377), (1643, 11433), (1961, 9579), (3193, 5883), (3441, 5459), (3811, 4929)]