204664640

素因数分解:

$2^6\times 5^1\times {\mathrm{639577}}^1$

素因数の和:639594

約数の個数: 28

約数和(自身を含む): 487358436

約数和(自身を除く): 282693796

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 639577, 1279154, 2558308, 3197885, 5116616, 6395770, 10233232, 12791540, 20466464, 25583080, 40932928, 51166160, 102332320, 204664640]

約数ペア:

[(1, 204664640), (2, 102332320), (4, 51166160), (5, 40932928), (8, 25583080), (10, 20466464), (16, 12791540), (20, 10233232), (32, 6395770), (40, 5116616), (64, 3197885), (80, 2558308), (160, 1279154), (320, 639577)]