20763519

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{193}}^1$

素因数の和:359

約数の個数: 32

約数和(自身を含む): 32778240

約数和(自身を除く): 12014721

約数列:

[1, 3, 7, 21, 47, 109, 141, 193, 327, 329, 579, 763, 987, 1351, 2289, 4053, 5123, 9071, 15369, 21037, 27213, 35861, 63111, 63497, 107583, 147259, 190491, 441777, 988739, 2966217, 6921173, 20763519]

約数ペア:

[(1, 20763519), (3, 6921173), (7, 2966217), (21, 988739), (47, 441777), (109, 190491), (141, 147259), (193, 107583), (327, 63497), (329, 63111), (579, 35861), (763, 27213), (987, 21037), (1351, 15369), (2289, 9071), (4053, 5123)]