21009717

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{797}}^1$

素因数の和:933

約数の個数: 24

約数和(自身を含む): 31744440

約数和(自身を除く): 10734723

約数列:

[1, 3, 9, 29, 87, 101, 261, 303, 797, 909, 2391, 2929, 7173, 8787, 23113, 26361, 69339, 80497, 208017, 241491, 724473, 2334413, 7003239, 21009717]

約数ペア:

[(1, 21009717), (3, 7003239), (9, 2334413), (29, 724473), (87, 241491), (101, 208017), (261, 80497), (303, 69339), (797, 26361), (909, 23113), (2391, 8787), (2929, 7173)]