20874280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{74551}}^1$

素因数の和:74569

約数の個数: 32

約数和(自身を含む): 53677440

約数和(自身を除く): 32803160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 74551, 149102, 298204, 372755, 521857, 596408, 745510, 1043714, 1491020, 2087428, 2609285, 2982040, 4174856, 5218570, 10437140, 20874280]

約数ペア:

[(1, 20874280), (2, 10437140), (4, 5218570), (5, 4174856), (7, 2982040), (8, 2609285), (10, 2087428), (14, 1491020), (20, 1043714), (28, 745510), (35, 596408), (40, 521857), (56, 372755), (70, 298204), (140, 149102), (280, 74551)]