21834239

素因数分解:

$7^1\times {\mathrm{17}}^2\times {\mathrm{43}}^1\times {\mathrm{251}}^1$

素因数の和:335

約数の個数: 24

約数和(自身を含む): 27232128

約数和(自身を除く): 5397889

約数列:

[1, 7, 17, 43, 119, 251, 289, 301, 731, 1757, 2023, 4267, 5117, 10793, 12427, 29869, 72539, 75551, 86989, 183481, 507773, 1284367, 3119177, 21834239]

約数ペア:

[(1, 21834239), (7, 3119177), (17, 1284367), (43, 507773), (119, 183481), (251, 86989), (289, 75551), (301, 72539), (731, 29869), (1757, 12427), (2023, 10793), (4267, 5117)]