257506560

素因数分解:

$2^8\times 3^3\times 5^1\times {\mathrm{7451}}^1$

素因数の和:7481

約数の個数: 144

約数和(自身を含む): 913913280

約数和(自身を除く): 656406720

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, 256, 270, 288, 320, 360, 384, 432, 480, 540, 576, 640, 720, 768, 864, 960, 1080, 1152, 1280, 1440, 1728, 1920, 2160, 2304, 2880, 3456, 3840, 4320, 5760, 6912, 7451, 8640, 11520, 14902, 17280, 22353, 29804, 34560, 37255, 44706, 59608, 67059, 74510, 89412, 111765, 119216, 134118, 149020, 178824, 201177, 223530, 238432, 268236, 298040, 335295, 357648, 402354, 447060, 476864, 536472, 596080, 670590, 715296, 804708, 894120, 953728, 1005885, 1072944, 1192160, 1341180, 1430592, 1609416, 1788240, 1907456, 2011770, 2145888, 2384320, 2682360, 2861184, 3218832, 3576480, 4023540, 4291776, 4768640, 5364720, 5722368, 6437664, 7152960, 8047080, 8583552, 9537280, 10729440, 12875328, 14305920, 16094160, 17167104, 21458880, 25750656, 28611840, 32188320, 42917760, 51501312, 64376640, 85835520, 128753280, 257506560]

約数ペア:

[(1, 257506560), (2, 128753280), (3, 85835520), (4, 64376640), (5, 51501312), (6, 42917760), (8, 32188320), (9, 28611840), (10, 25750656), (12, 21458880), (15, 17167104), (16, 16094160), (18, 14305920), (20, 12875328), (24, 10729440), (27, 9537280), (30, 8583552), (32, 8047080), (36, 7152960), (40, 6437664), (45, 5722368), (48, 5364720), (54, 4768640), (60, 4291776), (64, 4023540), (72, 3576480), (80, 3218832), (90, 2861184), (96, 2682360), (108, 2384320), (120, 2145888), (128, 2011770), (135, 1907456), (144, 1788240), (160, 1609416), (180, 1430592), (192, 1341180), (216, 1192160), (240, 1072944), (256, 1005885), (270, 953728), (288, 894120), (320, 804708), (360, 715296), (384, 670590), (432, 596080), (480, 536472), (540, 476864), (576, 447060), (640, 402354), (720, 357648), (768, 335295), (864, 298040), (960, 268236), (1080, 238432), (1152, 223530), (1280, 201177), (1440, 178824), (1728, 149020), (1920, 134118), (2160, 119216), (2304, 111765), (2880, 89412), (3456, 74510), (3840, 67059), (4320, 59608), (5760, 44706), (6912, 37255), (7451, 34560), (8640, 29804), (11520, 22353), (14902, 17280)]