168021

素因数分解:

$3^3\times 7^2\times {\mathrm{127}}^1$

素因数の和:150

約数の個数: 24

約数和(自身を含む): 291840

約数和(自身を除く): 123819

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 127, 147, 189, 381, 441, 889, 1143, 1323, 2667, 3429, 6223, 8001, 18669, 24003, 56007, 168021]

約数ペア:

[(1, 168021), (3, 56007), (7, 24003), (9, 18669), (21, 8001), (27, 6223), (49, 3429), (63, 2667), (127, 1323), (147, 1143), (189, 889), (381, 441)]