19806556

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{601}}^1$

素因数の和:730

約数の個数: 48

約数和(自身を含む): 43690752

約数和(自身を除く): 23884196

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 107, 154, 214, 308, 428, 601, 749, 1177, 1202, 1498, 2354, 2404, 2996, 4207, 4708, 6611, 8239, 8414, 13222, 16478, 16828, 26444, 32956, 46277, 64307, 92554, 128614, 185108, 257228, 450149, 707377, 900298, 1414754, 1800596, 2829508, 4951639, 9903278, 19806556]

約数ペア:

[(1, 19806556), (2, 9903278), (4, 4951639), (7, 2829508), (11, 1800596), (14, 1414754), (22, 900298), (28, 707377), (44, 450149), (77, 257228), (107, 185108), (154, 128614), (214, 92554), (308, 64307), (428, 46277), (601, 32956), (749, 26444), (1177, 16828), (1202, 16478), (1498, 13222), (2354, 8414), (2404, 8239), (2996, 6611), (4207, 4708)]