21746691

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{18731}}^1$

素因数の和:18783

約数の個数: 16

約数和(自身を含む): 32968320

約数和(自身を除く): 11221629

約数列:

[1, 3, 9, 27, 43, 129, 387, 1161, 18731, 56193, 168579, 505737, 805433, 2416299, 7248897, 21746691]

約数ペア:

[(1, 21746691), (3, 7248897), (9, 2416299), (27, 805433), (43, 505737), (129, 168579), (387, 56193), (1161, 18731)]