21543369

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{641}}^1\times {\mathrm{659}}^1$

素因数の和:1320

約数の個数: 16

約数和(自身を含む): 30507840

約数和(自身を除く): 8964471

約数列:

[1, 3, 17, 51, 641, 659, 1923, 1977, 10897, 11203, 32691, 33609, 422419, 1267257, 7181123, 21543369]

約数ペア:

[(1, 21543369), (3, 7181123), (17, 1267257), (51, 422419), (641, 33609), (659, 32691), (1923, 11203), (1977, 10897)]