81396945

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{258403}}^1$

素因数の和:258421

約数の個数: 24

約数和(自身を含む): 161244096

約数和(自身を除く): 79847151

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 258403, 775209, 1292015, 1808821, 2325627, 3876045, 5426463, 9044105, 11628135, 16279389, 27132315, 81396945]

約数ペア:

[(1, 81396945), (3, 27132315), (5, 16279389), (7, 11628135), (9, 9044105), (15, 5426463), (21, 3876045), (35, 2325627), (45, 1808821), (63, 1292015), (105, 775209), (315, 258403)]