81978456

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{313}}^1\times {\mathrm{1559}}^1$

素因数の和:1888

約数の個数: 64

約数和(自身を含む): 235123200

約数和(自身を除く): 153144744

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 313, 626, 939, 1252, 1559, 1878, 2191, 2504, 3118, 3756, 4382, 4677, 6236, 6573, 7512, 8764, 9354, 10913, 12472, 13146, 17528, 18708, 21826, 26292, 32739, 37416, 43652, 52584, 65478, 87304, 130956, 261912, 487967, 975934, 1463901, 1951868, 2927802, 3415769, 3903736, 5855604, 6831538, 10247307, 11711208, 13663076, 20494614, 27326152, 40989228, 81978456]

約数ペア:

[(1, 81978456), (2, 40989228), (3, 27326152), (4, 20494614), (6, 13663076), (7, 11711208), (8, 10247307), (12, 6831538), (14, 5855604), (21, 3903736), (24, 3415769), (28, 2927802), (42, 1951868), (56, 1463901), (84, 975934), (168, 487967), (313, 261912), (626, 130956), (939, 87304), (1252, 65478), (1559, 52584), (1878, 43652), (2191, 37416), (2504, 32739), (3118, 26292), (3756, 21826), (4382, 18708), (4677, 17528), (6236, 13146), (6573, 12472), (7512, 10913), (8764, 9354)]