15780520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{56359}}^1$

素因数の和:56377

約数の個数: 32

約数和(自身を含む): 40579200

約数和(自身を除く): 24798680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 56359, 112718, 225436, 281795, 394513, 450872, 563590, 789026, 1127180, 1578052, 1972565, 2254360, 3156104, 3945130, 7890260, 15780520]

約数ペア:

[(1, 15780520), (2, 7890260), (4, 3945130), (5, 3156104), (7, 2254360), (8, 1972565), (10, 1578052), (14, 1127180), (20, 789026), (28, 563590), (35, 450872), (40, 394513), (56, 281795), (70, 225436), (140, 112718), (280, 56359)]