21712089

素因数分解:

$3^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{6343}}^1$

素因数の和:6516

約数の個数: 16

約数和(自身を含む): 33293312

約数和(自身を除く): 11581223

約数列:

[1, 3, 7, 21, 163, 489, 1141, 3423, 6343, 19029, 44401, 133203, 1033909, 3101727, 7237363, 21712089]

約数ペア:

[(1, 21712089), (3, 7237363), (7, 3101727), (21, 1033909), (163, 133203), (489, 44401), (1141, 19029), (3423, 6343)]