21357540

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{39551}}^1$

素因数の和:39569

約数の個数: 48

約数和(自身を含む): 66447360

約数和(自身を除く): 45089820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 39551, 79102, 118653, 158204, 197755, 237306, 355959, 395510, 474612, 593265, 711918, 791020, 1067877, 1186530, 1423836, 1779795, 2135754, 2373060, 3559590, 4271508, 5339385, 7119180, 10678770, 21357540]

約数ペア:

[(1, 21357540), (2, 10678770), (3, 7119180), (4, 5339385), (5, 4271508), (6, 3559590), (9, 2373060), (10, 2135754), (12, 1779795), (15, 1423836), (18, 1186530), (20, 1067877), (27, 791020), (30, 711918), (36, 593265), (45, 474612), (54, 395510), (60, 355959), (90, 237306), (108, 197755), (135, 158204), (180, 118653), (270, 79102), (540, 39551)]