20281737

素因数分解:

$3^1\times 7^2\times {\mathrm{281}}^1\times {\mathrm{491}}^1$

素因数の和:789

約数の個数: 24

約数和(自身を含む): 31633632

約数和(自身を除く): 11351895

約数列:

[1, 3, 7, 21, 49, 147, 281, 491, 843, 1473, 1967, 3437, 5901, 10311, 13769, 24059, 41307, 72177, 137971, 413913, 965797, 2897391, 6760579, 20281737]

約数ペア:

[(1, 20281737), (3, 6760579), (7, 2897391), (21, 965797), (49, 413913), (147, 137971), (281, 72177), (491, 41307), (843, 24059), (1473, 13769), (1967, 10311), (3437, 5901)]