19721806

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{6959}}^1$

素因数の和:7083

約数の個数: 16

約数和(自身を含む): 32155200

約数和(自身を除く): 12433394

約数列:

[1, 2, 13, 26, 109, 218, 1417, 2834, 6959, 13918, 90467, 180934, 758531, 1517062, 9860903, 19721806]

約数ペア:

[(1, 19721806), (2, 9860903), (13, 1517062), (26, 758531), (109, 180934), (218, 90467), (1417, 13918), (2834, 6959)]