254163840

素因数分解:

$2^7\times 3^1\times 5^1\times 7^1\times {\mathrm{18911}}^1$

素因数の和:18940

約数の個数: 128

約数和(自身を含む): 925931520

約数和(自身を除く): 671767680

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, 18911, 37822, 56733, 75644, 94555, 113466, 132377, 151288, 189110, 226932, 264754, 283665, 302576, 378220, 397131, 453864, 529508, 567330, 605152, 661885, 756440, 794262, 907728, 1059016, 1134660, 1210304, 1323770, 1512880, 1588524, 1815456, 1985655, 2118032, 2269320, 2420608, 2647540, 3025760, 3177048, 3630912, 3971310, 4236064, 4538640, 5295080, 6051520, 6354096, 7261824, 7942620, 8472128, 9077280, 10590160, 12103040, 12708192, 15885240, 16944256, 18154560, 21180320, 25416384, 31770480, 36309120, 42360640, 50832768, 63540960, 84721280, 127081920, 254163840]

約数ペア:

[(1, 254163840), (2, 127081920), (3, 84721280), (4, 63540960), (5, 50832768), (6, 42360640), (7, 36309120), (8, 31770480), (10, 25416384), (12, 21180320), (14, 18154560), (15, 16944256), (16, 15885240), (20, 12708192), (21, 12103040), (24, 10590160), (28, 9077280), (30, 8472128), (32, 7942620), (35, 7261824), (40, 6354096), (42, 6051520), (48, 5295080), (56, 4538640), (60, 4236064), (64, 3971310), (70, 3630912), (80, 3177048), (84, 3025760), (96, 2647540), (105, 2420608), (112, 2269320), (120, 2118032), (128, 1985655), (140, 1815456), (160, 1588524), (168, 1512880), (192, 1323770), (210, 1210304), (224, 1134660), (240, 1059016), (280, 907728), (320, 794262), (336, 756440), (384, 661885), (420, 605152), (448, 567330), (480, 529508), (560, 453864), (640, 397131), (672, 378220), (840, 302576), (896, 283665), (960, 264754), (1120, 226932), (1344, 189110), (1680, 151288), (1920, 132377), (2240, 113466), (2688, 94555), (3360, 75644), (4480, 56733), (6720, 37822), (13440, 18911)]