128517120

素因数分解:

$2^{10}\times 3^2\times 5^1\times {\mathrm{2789}}^1$

素因数の和:2820

約数の個数: 132

約数和(自身を含む): 445468140

約数和(自身を除く): 316951020

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 120, 128, 144, 160, 180, 192, 240, 256, 288, 320, 360, 384, 480, 512, 576, 640, 720, 768, 960, 1024, 1152, 1280, 1440, 1536, 1920, 2304, 2560, 2789, 2880, 3072, 3840, 4608, 5120, 5578, 5760, 7680, 8367, 9216, 11156, 11520, 13945, 15360, 16734, 22312, 23040, 25101, 27890, 33468, 41835, 44624, 46080, 50202, 55780, 66936, 83670, 89248, 100404, 111560, 125505, 133872, 167340, 178496, 200808, 223120, 251010, 267744, 334680, 356992, 401616, 446240, 502020, 535488, 669360, 713984, 803232, 892480, 1004040, 1070976, 1338720, 1427968, 1606464, 1784960, 2008080, 2141952, 2677440, 2855936, 3212928, 3569920, 4016160, 4283904, 5354880, 6425856, 7139840, 8032320, 8567808, 10709760, 12851712, 14279680, 16064640, 21419520, 25703424, 32129280, 42839040, 64258560, 128517120]

約数ペア:

[(1, 128517120), (2, 64258560), (3, 42839040), (4, 32129280), (5, 25703424), (6, 21419520), (8, 16064640), (9, 14279680), (10, 12851712), (12, 10709760), (15, 8567808), (16, 8032320), (18, 7139840), (20, 6425856), (24, 5354880), (30, 4283904), (32, 4016160), (36, 3569920), (40, 3212928), (45, 2855936), (48, 2677440), (60, 2141952), (64, 2008080), (72, 1784960), (80, 1606464), (90, 1427968), (96, 1338720), (120, 1070976), (128, 1004040), (144, 892480), (160, 803232), (180, 713984), (192, 669360), (240, 535488), (256, 502020), (288, 446240), (320, 401616), (360, 356992), (384, 334680), (480, 267744), (512, 251010), (576, 223120), (640, 200808), (720, 178496), (768, 167340), (960, 133872), (1024, 125505), (1152, 111560), (1280, 100404), (1440, 89248), (1536, 83670), (1920, 66936), (2304, 55780), (2560, 50202), (2789, 46080), (2880, 44624), (3072, 41835), (3840, 33468), (4608, 27890), (5120, 25101), (5578, 23040), (5760, 22312), (7680, 16734), (8367, 15360), (9216, 13945), (11156, 11520)]