81511080

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{4219}}^1$

素因数の和:4263

約数の個数: 128

約数和(自身を含む): 291686400

約数和(自身を除く): 210175320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 23, 24, 28, 30, 35, 40, 42, 46, 56, 60, 69, 70, 84, 92, 105, 115, 120, 138, 140, 161, 168, 184, 210, 230, 276, 280, 322, 345, 420, 460, 483, 552, 644, 690, 805, 840, 920, 966, 1288, 1380, 1610, 1932, 2415, 2760, 3220, 3864, 4219, 4830, 6440, 8438, 9660, 12657, 16876, 19320, 21095, 25314, 29533, 33752, 42190, 50628, 59066, 63285, 84380, 88599, 97037, 101256, 118132, 126570, 147665, 168760, 177198, 194074, 236264, 253140, 291111, 295330, 354396, 388148, 442995, 485185, 506280, 582222, 590660, 679259, 708792, 776296, 885990, 970370, 1164444, 1181320, 1358518, 1455555, 1771980, 1940740, 2037777, 2328888, 2717036, 2911110, 3396295, 3543960, 3881480, 4075554, 5434072, 5822220, 6792590, 8151108, 10188885, 11644440, 13585180, 16302216, 20377770, 27170360, 40755540, 81511080]

約数ペア:

[(1, 81511080), (2, 40755540), (3, 27170360), (4, 20377770), (5, 16302216), (6, 13585180), (7, 11644440), (8, 10188885), (10, 8151108), (12, 6792590), (14, 5822220), (15, 5434072), (20, 4075554), (21, 3881480), (23, 3543960), (24, 3396295), (28, 2911110), (30, 2717036), (35, 2328888), (40, 2037777), (42, 1940740), (46, 1771980), (56, 1455555), (60, 1358518), (69, 1181320), (70, 1164444), (84, 970370), (92, 885990), (105, 776296), (115, 708792), (120, 679259), (138, 590660), (140, 582222), (161, 506280), (168, 485185), (184, 442995), (210, 388148), (230, 354396), (276, 295330), (280, 291111), (322, 253140), (345, 236264), (420, 194074), (460, 177198), (483, 168760), (552, 147665), (644, 126570), (690, 118132), (805, 101256), (840, 97037), (920, 88599), (966, 84380), (1288, 63285), (1380, 59066), (1610, 50628), (1932, 42190), (2415, 33752), (2760, 29533), (3220, 25314), (3864, 21095), (4219, 19320), (4830, 16876), (6440, 12657), (8438, 9660)]