280776979

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{193}}^1$

素因数の和:415

約数の個数: 32

約数和(自身を含む): 341824896

約数和(自身を除く): 61047917

約数列:

[1, 7, 37, 41, 137, 193, 259, 287, 959, 1351, 1517, 5069, 5617, 7141, 7913, 10619, 26441, 35483, 39319, 49987, 55391, 185087, 207829, 292781, 978317, 1084081, 1454803, 2049467, 6848219, 7588567, 40110997, 280776979]

約数ペア:

[(1, 280776979), (7, 40110997), (37, 7588567), (41, 6848219), (137, 2049467), (193, 1454803), (259, 1084081), (287, 978317), (959, 292781), (1351, 207829), (1517, 185087), (5069, 55391), (5617, 49987), (7141, 39319), (7913, 35483), (10619, 26441)]