19988817

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{193}}^1$

素因数の和:317

約数の個数: 32

約数和(自身を含む): 29798400

約数和(自身を除く): 9809583

約数列:

[1, 3, 19, 23, 57, 69, 79, 193, 237, 437, 579, 1311, 1501, 1817, 3667, 4439, 4503, 5451, 11001, 13317, 15247, 34523, 45741, 84341, 103569, 253023, 289693, 350681, 869079, 1052043, 6662939, 19988817]

約数ペア:

[(1, 19988817), (3, 6662939), (19, 1052043), (23, 869079), (57, 350681), (69, 289693), (79, 253023), (193, 103569), (237, 84341), (437, 45741), (579, 34523), (1311, 15247), (1501, 13317), (1817, 11001), (3667, 5451), (4439, 4503)]