218714881

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{997}}^1$

素因数の和:1070

約数の個数: 36

約数和(自身を含む): 287501844

約数和(自身を除く): 68786963

約数列:

[1, 7, 11, 37, 49, 77, 121, 259, 407, 539, 847, 997, 1813, 2849, 4477, 5929, 6979, 10967, 19943, 31339, 36889, 48853, 76769, 120637, 219373, 258223, 405779, 537383, 844459, 1807561, 2840453, 4463569, 5911213, 19883171, 31244983, 218714881]

約数ペア:

[(1, 218714881), (7, 31244983), (11, 19883171), (37, 5911213), (49, 4463569), (77, 2840453), (121, 1807561), (259, 844459), (407, 537383), (539, 405779), (847, 258223), (997, 219373), (1813, 120637), (2849, 76769), (4477, 48853), (5929, 36889), (6979, 31339), (10967, 19943)]