128224640

素因数分解:

$2^7\times 5^1\times {\mathrm{200351}}^1$

素因数の和:200370

約数の個数: 32

約数和(自身を含む): 306538560

約数和(自身を除く): 178313920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 200351, 400702, 801404, 1001755, 1602808, 2003510, 3205616, 4007020, 6411232, 8014040, 12822464, 16028080, 25644928, 32056160, 64112320, 128224640]

約数ペア:

[(1, 128224640), (2, 64112320), (4, 32056160), (5, 25644928), (8, 16028080), (10, 12822464), (16, 8014040), (20, 6411232), (32, 4007020), (40, 3205616), (64, 2003510), (80, 1602808), (128, 1001755), (160, 801404), (320, 400702), (640, 200351)]