20825217

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{5419}}^1$

素因数の和:5493

約数の個数: 24

約数和(自身を含む): 34948160

約数和(自身を除く): 14122943

約数列:

[1, 3, 7, 9, 21, 61, 63, 183, 427, 549, 1281, 3843, 5419, 16257, 37933, 48771, 113799, 330559, 341397, 991677, 2313913, 2975031, 6941739, 20825217]

約数ペア:

[(1, 20825217), (3, 6941739), (7, 2975031), (9, 2313913), (21, 991677), (61, 341397), (63, 330559), (183, 113799), (427, 48771), (549, 37933), (1281, 16257), (3843, 5419)]