20409669

素因数分解:

$3^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{2473}}^1$

素因数の和:2617

約数の個数: 24

約数和(自身を含む): 33963072

約数和(自身を除く): 13553403

約数列:

[1, 3, 7, 9, 21, 63, 131, 393, 917, 1179, 2473, 2751, 7419, 8253, 17311, 22257, 51933, 155799, 323963, 971889, 2267741, 2915667, 6803223, 20409669]

約数ペア:

[(1, 20409669), (3, 6803223), (7, 2915667), (9, 2267741), (21, 971889), (63, 323963), (131, 155799), (393, 51933), (917, 22257), (1179, 17311), (2473, 8253), (2751, 7419)]