387628479

素因数分解:

$3^2\times 7^1\times {\mathrm{1723}}^1\times {\mathrm{3571}}^1$

素因数の和:5307

約数の個数: 24

約数和(自身を含む): 640445312

約数和(自身を除く): 252816833

約数列:

[1, 3, 7, 9, 21, 63, 1723, 3571, 5169, 10713, 12061, 15507, 24997, 32139, 36183, 74991, 108549, 224973, 6152833, 18458499, 43069831, 55375497, 129209493, 387628479]

約数ペア:

[(1, 387628479), (3, 129209493), (7, 55375497), (9, 43069831), (21, 18458499), (63, 6152833), (1723, 224973), (3571, 108549), (5169, 74991), (10713, 36183), (12061, 32139), (15507, 24997)]