19662005

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{389}}^1\times {\mathrm{919}}^1$

素因数の和:1324

約数の個数: 16

約数和(自身を含む): 25833600

約数和(自身を除く): 6171595

約数列:

[1, 5, 11, 55, 389, 919, 1945, 4279, 4595, 10109, 21395, 50545, 357491, 1787455, 3932401, 19662005]

約数ペア:

[(1, 19662005), (5, 3932401), (11, 1787455), (55, 357491), (389, 50545), (919, 21395), (1945, 10109), (4279, 4595)]