278375972

素因数分解:

$2^2\times 7^1\times {\mathrm{109}}^1\times {\mathrm{197}}^1\times {\mathrm{463}}^1$

素因数の和:780

約数の個数: 48

約数和(自身を含む): 565931520

約数和(自身を除く): 287555548

約数列:

[1, 2, 4, 7, 14, 28, 109, 197, 218, 394, 436, 463, 763, 788, 926, 1379, 1526, 1852, 2758, 3052, 3241, 5516, 6482, 12964, 21473, 42946, 50467, 85892, 91211, 100934, 150311, 182422, 201868, 300622, 353269, 364844, 601244, 638477, 706538, 1276954, 1413076, 2553908, 9941999, 19883998, 39767996, 69593993, 139187986, 278375972]

約数ペア:

[(1, 278375972), (2, 139187986), (4, 69593993), (7, 39767996), (14, 19883998), (28, 9941999), (109, 2553908), (197, 1413076), (218, 1276954), (394, 706538), (436, 638477), (463, 601244), (763, 364844), (788, 353269), (926, 300622), (1379, 201868), (1526, 182422), (1852, 150311), (2758, 100934), (3052, 91211), (3241, 85892), (5516, 50467), (6482, 42946), (12964, 21473)]