18383980

素因数分解:

$2^2\times 5^1\times {\mathrm{911}}^1\times {\mathrm{1009}}^1$

素因数の和:1929

約数の個数: 24

約数和(自身を含む): 38687040

約数和(自身を除く): 20303060

約数列:

[1, 2, 4, 5, 10, 20, 911, 1009, 1822, 2018, 3644, 4036, 4555, 5045, 9110, 10090, 18220, 20180, 919199, 1838398, 3676796, 4595995, 9191990, 18383980]

約数ペア:

[(1, 18383980), (2, 9191990), (4, 4595995), (5, 3676796), (10, 1838398), (20, 919199), (911, 20180), (1009, 18220), (1822, 10090), (2018, 9110), (3644, 5045), (4036, 4555)]