21867780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1949}}^1$

素因数の和:1989

約数の個数: 96

約数和(自身を含む): 70761600

約数和(自身を除く): 48893820

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 17, 20, 22, 30, 33, 34, 44, 51, 55, 60, 66, 68, 85, 102, 110, 132, 165, 170, 187, 204, 220, 255, 330, 340, 374, 510, 561, 660, 748, 935, 1020, 1122, 1870, 1949, 2244, 2805, 3740, 3898, 5610, 5847, 7796, 9745, 11220, 11694, 19490, 21439, 23388, 29235, 33133, 38980, 42878, 58470, 64317, 66266, 85756, 99399, 107195, 116940, 128634, 132532, 165665, 198798, 214390, 257268, 321585, 331330, 364463, 397596, 428780, 496995, 643170, 662660, 728926, 993990, 1093389, 1286340, 1457852, 1822315, 1987980, 2186778, 3644630, 4373556, 5466945, 7289260, 10933890, 21867780]

約数ペア:

[(1, 21867780), (2, 10933890), (3, 7289260), (4, 5466945), (5, 4373556), (6, 3644630), (10, 2186778), (11, 1987980), (12, 1822315), (15, 1457852), (17, 1286340), (20, 1093389), (22, 993990), (30, 728926), (33, 662660), (34, 643170), (44, 496995), (51, 428780), (55, 397596), (60, 364463), (66, 331330), (68, 321585), (85, 257268), (102, 214390), (110, 198798), (132, 165665), (165, 132532), (170, 128634), (187, 116940), (204, 107195), (220, 99399), (255, 85756), (330, 66266), (340, 64317), (374, 58470), (510, 42878), (561, 38980), (660, 33133), (748, 29235), (935, 23388), (1020, 21439), (1122, 19490), (1870, 11694), (1949, 11220), (2244, 9745), (2805, 7796), (3740, 5847), (3898, 5610)]