18320421

素因数分解:

$3^1\times 7^1\times {\mathrm{641}}^1\times {\mathrm{1361}}^1$

素因数の和:2012

約数の個数: 16

約数和(自身を含む): 27980928

約数和(自身を除く): 9660507

約数列:

[1, 3, 7, 21, 641, 1361, 1923, 4083, 4487, 9527, 13461, 28581, 872401, 2617203, 6106807, 18320421]

約数ペア:

[(1, 18320421), (3, 6106807), (7, 2617203), (21, 872401), (641, 28581), (1361, 13461), (1923, 9527), (4083, 4487)]