21046731

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{409}}^1\times {\mathrm{1009}}^1$

素因数の和:1438

約数の個数: 16

約数和(自身を含む): 29815200

約数和(自身を除く): 8768469

約数列:

[1, 3, 17, 51, 409, 1009, 1227, 3027, 6953, 17153, 20859, 51459, 412681, 1238043, 7015577, 21046731]

約数ペア:

[(1, 21046731), (3, 7015577), (17, 1238043), (51, 412681), (409, 51459), (1009, 20859), (1227, 17153), (3027, 6953)]