388778880

素因数分解:

$2^7\times 3^1\times 5^1\times 7^1\times {\mathrm{28927}}^1$

素因数の和:28956

約数の個数: 128

約数和(自身を含む): 1416314880

約数和(自身を除く): 1027536000

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 80, 84, 96, 105, 112, 120, 128, 140, 160, 168, 192, 210, 224, 240, 280, 320, 336, 384, 420, 448, 480, 560, 640, 672, 840, 896, 960, 1120, 1344, 1680, 1920, 2240, 2688, 3360, 4480, 6720, 13440, 28927, 57854, 86781, 115708, 144635, 173562, 202489, 231416, 289270, 347124, 404978, 433905, 462832, 578540, 607467, 694248, 809956, 867810, 925664, 1012445, 1157080, 1214934, 1388496, 1619912, 1735620, 1851328, 2024890, 2314160, 2429868, 2776992, 3037335, 3239824, 3471240, 3702656, 4049780, 4628320, 4859736, 5553984, 6074670, 6479648, 6942480, 8099560, 9256640, 9719472, 11107968, 12149340, 12959296, 13884960, 16199120, 18513280, 19438944, 24298680, 25918592, 27769920, 32398240, 38877888, 48597360, 55539840, 64796480, 77755776, 97194720, 129592960, 194389440, 388778880]

約数ペア:

[(1, 388778880), (2, 194389440), (3, 129592960), (4, 97194720), (5, 77755776), (6, 64796480), (7, 55539840), (8, 48597360), (10, 38877888), (12, 32398240), (14, 27769920), (15, 25918592), (16, 24298680), (20, 19438944), (21, 18513280), (24, 16199120), (28, 13884960), (30, 12959296), (32, 12149340), (35, 11107968), (40, 9719472), (42, 9256640), (48, 8099560), (56, 6942480), (60, 6479648), (64, 6074670), (70, 5553984), (80, 4859736), (84, 4628320), (96, 4049780), (105, 3702656), (112, 3471240), (120, 3239824), (128, 3037335), (140, 2776992), (160, 2429868), (168, 2314160), (192, 2024890), (210, 1851328), (224, 1735620), (240, 1619912), (280, 1388496), (320, 1214934), (336, 1157080), (384, 1012445), (420, 925664), (448, 867810), (480, 809956), (560, 694248), (640, 607467), (672, 578540), (840, 462832), (896, 433905), (960, 404978), (1120, 347124), (1344, 289270), (1680, 231416), (1920, 202489), (2240, 173562), (2688, 144635), (3360, 115708), (4480, 86781), (6720, 57854), (13440, 28927)]