19890745

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{24709}}^1$

素因数の和:24744

約数の個数: 16

約数和(自身を含む): 28465920

約数和(自身を除く): 8575175

約数列:

[1, 5, 7, 23, 35, 115, 161, 805, 24709, 123545, 172963, 568307, 864815, 2841535, 3978149, 19890745]

約数ペア:

[(1, 19890745), (5, 3978149), (7, 2841535), (23, 864815), (35, 568307), (115, 172963), (161, 123545), (805, 24709)]