20511360

素因数分解:

$2^7\times 3^3\times 5^1\times {\mathrm{1187}}^1$

素因数の和:1215

約数の個数: 128

約数和(自身を含む): 72705600

約数和(自身を除く): 52194240

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 90, 96, 108, 120, 128, 135, 144, 160, 180, 192, 216, 240, 270, 288, 320, 360, 384, 432, 480, 540, 576, 640, 720, 864, 960, 1080, 1152, 1187, 1440, 1728, 1920, 2160, 2374, 2880, 3456, 3561, 4320, 4748, 5760, 5935, 7122, 8640, 9496, 10683, 11870, 14244, 17280, 17805, 18992, 21366, 23740, 28488, 32049, 35610, 37984, 42732, 47480, 53415, 56976, 64098, 71220, 75968, 85464, 94960, 106830, 113952, 128196, 142440, 151936, 160245, 170928, 189920, 213660, 227904, 256392, 284880, 320490, 341856, 379840, 427320, 455808, 512784, 569760, 640980, 683712, 759680, 854640, 1025568, 1139520, 1281960, 1367424, 1709280, 2051136, 2279040, 2563920, 3418560, 4102272, 5127840, 6837120, 10255680, 20511360]

約数ペア:

[(1, 20511360), (2, 10255680), (3, 6837120), (4, 5127840), (5, 4102272), (6, 3418560), (8, 2563920), (9, 2279040), (10, 2051136), (12, 1709280), (15, 1367424), (16, 1281960), (18, 1139520), (20, 1025568), (24, 854640), (27, 759680), (30, 683712), (32, 640980), (36, 569760), (40, 512784), (45, 455808), (48, 427320), (54, 379840), (60, 341856), (64, 320490), (72, 284880), (80, 256392), (90, 227904), (96, 213660), (108, 189920), (120, 170928), (128, 160245), (135, 151936), (144, 142440), (160, 128196), (180, 113952), (192, 106830), (216, 94960), (240, 85464), (270, 75968), (288, 71220), (320, 64098), (360, 56976), (384, 53415), (432, 47480), (480, 42732), (540, 37984), (576, 35610), (640, 32049), (720, 28488), (864, 23740), (960, 21366), (1080, 18992), (1152, 17805), (1187, 17280), (1440, 14244), (1728, 11870), (1920, 10683), (2160, 9496), (2374, 8640), (2880, 7122), (3456, 5935), (3561, 5760), (4320, 4748)]