21457023

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53777}}^1$

素因数の和:53806

約数の個数: 16

約数和(自身を含む): 34417920

約数和(自身を除く): 12960897

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 53777, 161331, 376439, 1021763, 1129317, 3065289, 7152341, 21457023]

約数ペア:

[(1, 21457023), (3, 7152341), (7, 3065289), (19, 1129317), (21, 1021763), (57, 376439), (133, 161331), (399, 53777)]