21710787

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{54413}}^1$

素因数の和:54442

約数の個数: 16

約数和(自身を含む): 34824960

約数和(自身を除く): 13114173

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 54413, 163239, 380891, 1033847, 1142673, 3101541, 7236929, 21710787]

約数ペア:

[(1, 21710787), (3, 7236929), (7, 3101541), (19, 1142673), (21, 1033847), (57, 380891), (133, 163239), (399, 54413)]