199940020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1428143}}^1$

素因数の和:1428159

約数の個数: 24

約数和(自身を含む): 479856384

約数和(自身を除く): 279916364

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1428143, 2856286, 5712572, 7140715, 9997001, 14281430, 19994002, 28562860, 39988004, 49985005, 99970010, 199940020]

約数ペア:

[(1, 199940020), (2, 99970010), (4, 49985005), (5, 39988004), (7, 28562860), (10, 19994002), (14, 14281430), (20, 9997001), (28, 7140715), (35, 5712572), (70, 2856286), (140, 1428143)]