256752720

素因数分解:

$2^4\times 3^3\times 5^1\times 7^1\times {\mathrm{16981}}^1$

素因数の和:17010

約数の個数: 160

約数和(自身を含む): 1010768640

約数和(自身を除く): 754015920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 84, 90, 105, 108, 112, 120, 126, 135, 140, 144, 168, 180, 189, 210, 216, 240, 252, 270, 280, 315, 336, 360, 378, 420, 432, 504, 540, 560, 630, 720, 756, 840, 945, 1008, 1080, 1260, 1512, 1680, 1890, 2160, 2520, 3024, 3780, 5040, 7560, 15120, 16981, 33962, 50943, 67924, 84905, 101886, 118867, 135848, 152829, 169810, 203772, 237734, 254715, 271696, 305658, 339620, 356601, 407544, 458487, 475468, 509430, 594335, 611316, 679240, 713202, 764145, 815088, 916974, 950936, 1018860, 1069803, 1188670, 1222632, 1358480, 1426404, 1528290, 1783005, 1833948, 1901872, 2037720, 2139606, 2292435, 2377340, 2445264, 2852808, 3056580, 3209409, 3566010, 3667896, 4075440, 4279212, 4584870, 4754680, 5349015, 5705616, 6113160, 6418818, 7132020, 7335792, 8558424, 9169740, 9509360, 10698030, 12226320, 12837636, 14264040, 16047045, 17116848, 18339480, 21396060, 25675272, 28528080, 32094090, 36678960, 42792120, 51350544, 64188180, 85584240, 128376360, 256752720]

約数ペア:

[(1, 256752720), (2, 128376360), (3, 85584240), (4, 64188180), (5, 51350544), (6, 42792120), (7, 36678960), (8, 32094090), (9, 28528080), (10, 25675272), (12, 21396060), (14, 18339480), (15, 17116848), (16, 16047045), (18, 14264040), (20, 12837636), (21, 12226320), (24, 10698030), (27, 9509360), (28, 9169740), (30, 8558424), (35, 7335792), (36, 7132020), (40, 6418818), (42, 6113160), (45, 5705616), (48, 5349015), (54, 4754680), (56, 4584870), (60, 4279212), (63, 4075440), (70, 3667896), (72, 3566010), (80, 3209409), (84, 3056580), (90, 2852808), (105, 2445264), (108, 2377340), (112, 2292435), (120, 2139606), (126, 2037720), (135, 1901872), (140, 1833948), (144, 1783005), (168, 1528290), (180, 1426404), (189, 1358480), (210, 1222632), (216, 1188670), (240, 1069803), (252, 1018860), (270, 950936), (280, 916974), (315, 815088), (336, 764145), (360, 713202), (378, 679240), (420, 611316), (432, 594335), (504, 509430), (540, 475468), (560, 458487), (630, 407544), (720, 356601), (756, 339620), (840, 305658), (945, 271696), (1008, 254715), (1080, 237734), (1260, 203772), (1512, 169810), (1680, 152829), (1890, 135848), (2160, 118867), (2520, 101886), (3024, 84905), (3780, 67924), (5040, 50943), (7560, 33962), (15120, 16981)]