19666738

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{359}}^1$

素因数の和:431

約数の個数: 48

約数和(自身を含む): 37920960

約数和(自身を除く): 18254222

約数列:

[1, 2, 7, 13, 14, 26, 43, 49, 86, 91, 98, 182, 301, 359, 559, 602, 637, 718, 1118, 1274, 2107, 2513, 3913, 4214, 4667, 5026, 7826, 9334, 15437, 17591, 27391, 30874, 32669, 35182, 54782, 65338, 108059, 200681, 216118, 228683, 401362, 457366, 756413, 1404767, 1512826, 2809534, 9833369, 19666738]

約数ペア:

[(1, 19666738), (2, 9833369), (7, 2809534), (13, 1512826), (14, 1404767), (26, 756413), (43, 457366), (49, 401362), (86, 228683), (91, 216118), (98, 200681), (182, 108059), (301, 65338), (359, 54782), (559, 35182), (602, 32669), (637, 30874), (718, 27391), (1118, 17591), (1274, 15437), (2107, 9334), (2513, 7826), (3913, 5026), (4214, 4667)]