639396094

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{829}}^1\times {\mathrm{20297}}^1$

素因数の和:21147

約数の個数: 16

約数和(自身を含む): 1010840400

約数和(自身を除く): 371444306

約数列:

[1, 2, 19, 38, 829, 1658, 15751, 20297, 31502, 40594, 385643, 771286, 16826213, 33652426, 319698047, 639396094]

約数ペア:

[(1, 639396094), (2, 319698047), (19, 33652426), (38, 16826213), (829, 771286), (1658, 385643), (15751, 40594), (20297, 31502)]