20815167

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1$

素因数の和:231

約数の個数: 32

約数和(自身を含む): 30191616

約数和(自身を除く): 9376449

約数列:

[1, 3, 31, 41, 53, 93, 103, 123, 159, 309, 1271, 1643, 2173, 3193, 3813, 4223, 4929, 5459, 6519, 9579, 12669, 16377, 67363, 130913, 169229, 202089, 223819, 392739, 507687, 671457, 6938389, 20815167]

約数ペア:

[(1, 20815167), (3, 6938389), (31, 671457), (41, 507687), (53, 392739), (93, 223819), (103, 202089), (123, 169229), (159, 130913), (309, 67363), (1271, 16377), (1643, 12669), (2173, 9579), (3193, 6519), (3813, 5459), (4223, 4929)]