19631521

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1$

素因数の和:265

約数の個数: 32

約数和(自身を含む): 25724160

約数和(自身を除く): 6092639

約数列:

[1, 7, 13, 29, 43, 91, 173, 203, 301, 377, 559, 1211, 1247, 2249, 2639, 3913, 5017, 7439, 8729, 15743, 16211, 35119, 52073, 65221, 96707, 113477, 215731, 456547, 676949, 1510117, 2804503, 19631521]

約数ペア:

[(1, 19631521), (7, 2804503), (13, 1510117), (29, 676949), (43, 456547), (91, 215731), (173, 113477), (203, 96707), (301, 65221), (377, 52073), (559, 35119), (1211, 16211), (1247, 15743), (2249, 8729), (2639, 7439), (3913, 5017)]