21037023

素因数分解:

$3^3\times 7^2\times {\mathrm{15901}}^1$

素因数の和:15924

約数の個数: 24

約数和(自身を含む): 36256560

約数和(自身を除く): 15219537

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 15901, 47703, 111307, 143109, 333921, 429327, 779149, 1001763, 2337447, 3005289, 7012341, 21037023]

約数ペア:

[(1, 21037023), (3, 7012341), (7, 3005289), (9, 2337447), (21, 1001763), (27, 779149), (49, 429327), (63, 333921), (147, 143109), (189, 111307), (441, 47703), (1323, 15901)]