19800140

素因数分解:

$2^2\times 5^1\times {\mathrm{431}}^1\times {\mathrm{2297}}^1$

素因数の和:2737

約数の個数: 24

約数和(自身を含む): 41694912

約数和(自身を除く): 21894772

約数列:

[1, 2, 4, 5, 10, 20, 431, 862, 1724, 2155, 2297, 4310, 4594, 8620, 9188, 11485, 22970, 45940, 990007, 1980014, 3960028, 4950035, 9900070, 19800140]

約数ペア:

[(1, 19800140), (2, 9900070), (4, 4950035), (5, 3960028), (10, 1980014), (20, 990007), (431, 45940), (862, 22970), (1724, 11485), (2155, 9188), (2297, 8620), (4310, 4594)]