18753231

素因数分解:

$3^1\times 7^2\times {\mathrm{193}}^1\times {\mathrm{661}}^1$

素因数の和:871

約数の個数: 24

約数和(自身を含む): 29281584

約数和(自身を除く): 10528353

約数列:

[1, 3, 7, 21, 49, 147, 193, 579, 661, 1351, 1983, 4053, 4627, 9457, 13881, 28371, 32389, 97167, 127573, 382719, 893011, 2679033, 6251077, 18753231]

約数ペア:

[(1, 18753231), (3, 6251077), (7, 2679033), (21, 893011), (49, 382719), (147, 127573), (193, 97167), (579, 32389), (661, 28371), (1351, 13881), (1983, 9457), (4053, 4627)]