20997970

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{42853}}^1$

素因数の和:42874

約数の個数: 24

約数和(自身を含む): 43968204

約数和(自身を除く): 22970234

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 42853, 85706, 214265, 299971, 428530, 599942, 1499855, 2099797, 2999710, 4199594, 10498985, 20997970]

約数ペア:

[(1, 20997970), (2, 10498985), (5, 4199594), (7, 2999710), (10, 2099797), (14, 1499855), (35, 599942), (49, 428530), (70, 299971), (98, 214265), (245, 85706), (490, 42853)]