20947990

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{42751}}^1$

素因数の和:42772

約数の個数: 24

約数和(自身を含む): 43863552

約数和(自身を除く): 22915562

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 42751, 85502, 213755, 299257, 427510, 598514, 1496285, 2094799, 2992570, 4189598, 10473995, 20947990]

約数ペア:

[(1, 20947990), (2, 10473995), (5, 4189598), (7, 2992570), (10, 2094799), (14, 1496285), (35, 598514), (49, 427510), (70, 299257), (98, 213755), (245, 85502), (490, 42751)]