20787669

素因数分解:

$3^2\times 7^1\times {\mathrm{181}}^1\times {\mathrm{1823}}^1$

素因数の和:2017

約数の個数: 24

約数和(自身を含む): 34524672

約数和(自身を除く): 13737003

約数列:

[1, 3, 7, 9, 21, 63, 181, 543, 1267, 1629, 1823, 3801, 5469, 11403, 12761, 16407, 38283, 114849, 329963, 989889, 2309741, 2969667, 6929223, 20787669]

約数ペア:

[(1, 20787669), (3, 6929223), (7, 2969667), (9, 2309741), (21, 989889), (63, 329963), (181, 114849), (543, 38283), (1267, 16407), (1629, 12761), (1823, 11403), (3801, 5469)]