18914688

素因数分解:

$2^7\times 3^3\times {\mathrm{13}}^1\times {\mathrm{421}}^1$

素因数の和:457

約数の個数: 128

約数和(自身を含む): 60261600

約数和(自身を除く): 41346912

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 27, 32, 36, 39, 48, 52, 54, 64, 72, 78, 96, 104, 108, 117, 128, 144, 156, 192, 208, 216, 234, 288, 312, 351, 384, 416, 421, 432, 468, 576, 624, 702, 832, 842, 864, 936, 1152, 1248, 1263, 1404, 1664, 1684, 1728, 1872, 2496, 2526, 2808, 3368, 3456, 3744, 3789, 4992, 5052, 5473, 5616, 6736, 7488, 7578, 10104, 10946, 11232, 11367, 13472, 14976, 15156, 16419, 20208, 21892, 22464, 22734, 26944, 30312, 32838, 40416, 43784, 44928, 45468, 49257, 53888, 60624, 65676, 80832, 87568, 90936, 98514, 121248, 131352, 147771, 161664, 175136, 181872, 197028, 242496, 262704, 295542, 350272, 363744, 394056, 484992, 525408, 591084, 700544, 727488, 788112, 1050816, 1182168, 1454976, 1576224, 2101632, 2364336, 3152448, 4728672, 6304896, 9457344, 18914688]

約数ペア:

[(1, 18914688), (2, 9457344), (3, 6304896), (4, 4728672), (6, 3152448), (8, 2364336), (9, 2101632), (12, 1576224), (13, 1454976), (16, 1182168), (18, 1050816), (24, 788112), (26, 727488), (27, 700544), (32, 591084), (36, 525408), (39, 484992), (48, 394056), (52, 363744), (54, 350272), (64, 295542), (72, 262704), (78, 242496), (96, 197028), (104, 181872), (108, 175136), (117, 161664), (128, 147771), (144, 131352), (156, 121248), (192, 98514), (208, 90936), (216, 87568), (234, 80832), (288, 65676), (312, 60624), (351, 53888), (384, 49257), (416, 45468), (421, 44928), (432, 43784), (468, 40416), (576, 32838), (624, 30312), (702, 26944), (832, 22734), (842, 22464), (864, 21892), (936, 20208), (1152, 16419), (1248, 15156), (1263, 14976), (1404, 13472), (1664, 11367), (1684, 11232), (1728, 10946), (1872, 10104), (2496, 7578), (2526, 7488), (2808, 6736), (3368, 5616), (3456, 5473), (3744, 5052), (3789, 4992)]