256215540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{313}}^1\times {\mathrm{1949}}^1$

素因数の和:2281

約数の個数: 96

約数和(自身を含む): 822931200

約数和(自身を除く): 566715660

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 313, 420, 626, 939, 1252, 1565, 1878, 1949, 2191, 3130, 3756, 3898, 4382, 4695, 5847, 6260, 6573, 7796, 8764, 9390, 9745, 10955, 11694, 13146, 13643, 18780, 19490, 21910, 23388, 26292, 27286, 29235, 32865, 38980, 40929, 43820, 54572, 58470, 65730, 68215, 81858, 116940, 131460, 136430, 163716, 204645, 272860, 409290, 610037, 818580, 1220074, 1830111, 2440148, 3050185, 3660222, 4270259, 6100370, 7320444, 8540518, 9150555, 12200740, 12810777, 17081036, 18301110, 21351295, 25621554, 36602220, 42702590, 51243108, 64053885, 85405180, 128107770, 256215540]

約数ペア:

[(1, 256215540), (2, 128107770), (3, 85405180), (4, 64053885), (5, 51243108), (6, 42702590), (7, 36602220), (10, 25621554), (12, 21351295), (14, 18301110), (15, 17081036), (20, 12810777), (21, 12200740), (28, 9150555), (30, 8540518), (35, 7320444), (42, 6100370), (60, 4270259), (70, 3660222), (84, 3050185), (105, 2440148), (140, 1830111), (210, 1220074), (313, 818580), (420, 610037), (626, 409290), (939, 272860), (1252, 204645), (1565, 163716), (1878, 136430), (1949, 131460), (2191, 116940), (3130, 81858), (3756, 68215), (3898, 65730), (4382, 58470), (4695, 54572), (5847, 43820), (6260, 40929), (6573, 38980), (7796, 32865), (8764, 29235), (9390, 27286), (9745, 26292), (10955, 23388), (11694, 21910), (13146, 19490), (13643, 18780)]