217889140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1556351}}^1$

素因数の和:1556367

約数の個数: 24

約数和(自身を含む): 522934272

約数和(自身を除く): 305045132

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1556351, 3112702, 6225404, 7781755, 10894457, 15563510, 21788914, 31127020, 43577828, 54472285, 108944570, 217889140]

約数ペア:

[(1, 217889140), (2, 108944570), (4, 54472285), (5, 43577828), (7, 31127020), (10, 21788914), (14, 15563510), (20, 10894457), (28, 7781755), (35, 6225404), (70, 3112702), (140, 1556351)]