209865740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1499041}}^1$

素因数の和:1499057

約数の個数: 24

約数和(自身を含む): 503678112

約数和(自身を除く): 293812372

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1499041, 2998082, 5996164, 7495205, 10493287, 14990410, 20986574, 29980820, 41973148, 52466435, 104932870, 209865740]

約数ペア:

[(1, 209865740), (2, 104932870), (4, 52466435), (5, 41973148), (7, 29980820), (10, 20986574), (14, 14990410), (20, 10493287), (28, 7495205), (35, 5996164), (70, 2998082), (140, 1499041)]