400070020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{2857643}}^1$

素因数の和:2857659

約数の個数: 24

約数和(自身を含む): 960168384

約数和(自身を除く): 560098364

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 2857643, 5715286, 11430572, 14288215, 20003501, 28576430, 40007002, 57152860, 80014004, 100017505, 200035010, 400070020]

約数ペア:

[(1, 400070020), (2, 200035010), (4, 100017505), (5, 80014004), (7, 57152860), (10, 40007002), (14, 28576430), (20, 20003501), (28, 14288215), (35, 11430572), (70, 5715286), (140, 2857643)]