20190009

素因数分解:

$3^1\times 7^4\times {\mathrm{2803}}^1$

素因数の和:2834

約数の個数: 20

約数和(自身を含む): 31416016

約数和(自身を除く): 11226007

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 2401, 2803, 7203, 8409, 19621, 58863, 137347, 412041, 961429, 2884287, 6730003, 20190009]

約数ペア:

[(1, 20190009), (3, 6730003), (7, 2884287), (21, 961429), (49, 412041), (147, 137347), (343, 58863), (1029, 19621), (2401, 8409), (2803, 7203)]