138768140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{991201}}^1$

素因数の和:991217

約数の個数: 24

約数和(自身を含む): 333043872

約数和(自身を除く): 194275732

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 991201, 1982402, 3964804, 4956005, 6938407, 9912010, 13876814, 19824020, 27753628, 34692035, 69384070, 138768140]

約数ペア:

[(1, 138768140), (2, 69384070), (4, 34692035), (5, 27753628), (7, 19824020), (10, 13876814), (14, 9912010), (20, 6938407), (28, 4956005), (35, 3964804), (70, 1982402), (140, 991201)]