18468988

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{487}}^1\times {\mathrm{499}}^1$

素因数の和:1009

約数の個数: 24

約数和(自身を含む): 34160000

約数和(自身を除く): 15691012

約数列:

[1, 2, 4, 19, 38, 76, 487, 499, 974, 998, 1948, 1996, 9253, 9481, 18506, 18962, 37012, 37924, 243013, 486026, 972052, 4617247, 9234494, 18468988]

約数ペア:

[(1, 18468988), (2, 9234494), (4, 4617247), (19, 972052), (38, 486026), (76, 243013), (487, 37924), (499, 37012), (974, 18962), (998, 18506), (1948, 9481), (1996, 9253)]