20581440

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1949}}^1$

素因数の和:1980

約数の個数: 112

約数和(自身を含む): 71323200

約数和(自身を除く): 50741760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 32, 33, 40, 44, 48, 55, 60, 64, 66, 80, 88, 96, 110, 120, 132, 160, 165, 176, 192, 220, 240, 264, 320, 330, 352, 440, 480, 528, 660, 704, 880, 960, 1056, 1320, 1760, 1949, 2112, 2640, 3520, 3898, 5280, 5847, 7796, 9745, 10560, 11694, 15592, 19490, 21439, 23388, 29235, 31184, 38980, 42878, 46776, 58470, 62368, 64317, 77960, 85756, 93552, 107195, 116940, 124736, 128634, 155920, 171512, 187104, 214390, 233880, 257268, 311840, 321585, 343024, 374208, 428780, 467760, 514536, 623680, 643170, 686048, 857560, 935520, 1029072, 1286340, 1372096, 1715120, 1871040, 2058144, 2572680, 3430240, 4116288, 5145360, 6860480, 10290720, 20581440]

約数ペア:

[(1, 20581440), (2, 10290720), (3, 6860480), (4, 5145360), (5, 4116288), (6, 3430240), (8, 2572680), (10, 2058144), (11, 1871040), (12, 1715120), (15, 1372096), (16, 1286340), (20, 1029072), (22, 935520), (24, 857560), (30, 686048), (32, 643170), (33, 623680), (40, 514536), (44, 467760), (48, 428780), (55, 374208), (60, 343024), (64, 321585), (66, 311840), (80, 257268), (88, 233880), (96, 214390), (110, 187104), (120, 171512), (132, 155920), (160, 128634), (165, 124736), (176, 116940), (192, 107195), (220, 93552), (240, 85756), (264, 77960), (320, 64317), (330, 62368), (352, 58470), (440, 46776), (480, 42878), (528, 38980), (660, 31184), (704, 29235), (880, 23388), (960, 21439), (1056, 19490), (1320, 15592), (1760, 11694), (1949, 10560), (2112, 9745), (2640, 7796), (3520, 5847), (3898, 5280)]