19976411

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{349}}^1$

素因数の和:423

約数の個数: 32

約数和(自身を含む): 26812800

約数和(自身を除く): 6836389

約数列:

[1, 7, 13, 17, 37, 91, 119, 221, 259, 349, 481, 629, 1547, 2443, 3367, 4403, 4537, 5933, 8177, 12913, 31759, 41531, 57239, 77129, 90391, 167869, 219521, 539903, 1175083, 1536647, 2853773, 19976411]

約数ペア:

[(1, 19976411), (7, 2853773), (13, 1536647), (17, 1175083), (37, 539903), (91, 219521), (119, 167869), (221, 90391), (259, 77129), (349, 57239), (481, 41531), (629, 31759), (1547, 12913), (2443, 8177), (3367, 5933), (4403, 4537)]