20964480

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{179}}^1$

素因数の和:262

約数の個数: 128

約数和(自身を含む): 68299200

約数和(自身を除く): 47334720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 61, 64, 80, 96, 120, 122, 128, 160, 179, 183, 192, 240, 244, 305, 320, 358, 366, 384, 480, 488, 537, 610, 640, 716, 732, 895, 915, 960, 976, 1074, 1220, 1432, 1464, 1790, 1830, 1920, 1952, 2148, 2440, 2685, 2864, 2928, 3580, 3660, 3904, 4296, 4880, 5370, 5728, 5856, 7160, 7320, 7808, 8592, 9760, 10740, 10919, 11456, 11712, 14320, 14640, 17184, 19520, 21480, 21838, 22912, 23424, 28640, 29280, 32757, 34368, 39040, 42960, 43676, 54595, 57280, 58560, 65514, 68736, 85920, 87352, 109190, 114560, 117120, 131028, 163785, 171840, 174704, 218380, 262056, 327570, 343680, 349408, 436760, 524112, 655140, 698816, 873520, 1048224, 1310280, 1397632, 1747040, 2096448, 2620560, 3494080, 4192896, 5241120, 6988160, 10482240, 20964480]

約数ペア:

[(1, 20964480), (2, 10482240), (3, 6988160), (4, 5241120), (5, 4192896), (6, 3494080), (8, 2620560), (10, 2096448), (12, 1747040), (15, 1397632), (16, 1310280), (20, 1048224), (24, 873520), (30, 698816), (32, 655140), (40, 524112), (48, 436760), (60, 349408), (61, 343680), (64, 327570), (80, 262056), (96, 218380), (120, 174704), (122, 171840), (128, 163785), (160, 131028), (179, 117120), (183, 114560), (192, 109190), (240, 87352), (244, 85920), (305, 68736), (320, 65514), (358, 58560), (366, 57280), (384, 54595), (480, 43676), (488, 42960), (537, 39040), (610, 34368), (640, 32757), (716, 29280), (732, 28640), (895, 23424), (915, 22912), (960, 21838), (976, 21480), (1074, 19520), (1220, 17184), (1432, 14640), (1464, 14320), (1790, 11712), (1830, 11456), (1920, 10919), (1952, 10740), (2148, 9760), (2440, 8592), (2685, 7808), (2864, 7320), (2928, 7160), (3580, 5856), (3660, 5728), (3904, 5370), (4296, 4880)]