20340460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{145289}}^1$

素因数の和:145305

約数の個数: 24

約数和(自身を含む): 48817440

約数和(自身を除く): 28476980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 145289, 290578, 581156, 726445, 1017023, 1452890, 2034046, 2905780, 4068092, 5085115, 10170230, 20340460]

約数ペア:

[(1, 20340460), (2, 10170230), (4, 5085115), (5, 4068092), (7, 2905780), (10, 2034046), (14, 1452890), (20, 1017023), (28, 726445), (35, 581156), (70, 290578), (140, 145289)]