21125806

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{5381}}^1$

素因数の和:5547

約数の個数: 16

約数和(自身を含む): 34358688

約数和(自身を除く): 13232882

約数列:

[1, 2, 13, 26, 151, 302, 1963, 3926, 5381, 10762, 69953, 139906, 812531, 1625062, 10562903, 21125806]

約数ペア:

[(1, 21125806), (2, 10562903), (13, 1625062), (26, 812531), (151, 139906), (302, 69953), (1963, 10762), (3926, 5381)]