256215120

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{21787}}^1$

素因数の和:21817

約数の個数: 120

約数和(自身を含む): 923985504

約数和(自身を除く): 667770384

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 49, 56, 60, 70, 80, 84, 98, 105, 112, 120, 140, 147, 168, 196, 210, 240, 245, 280, 294, 336, 392, 420, 490, 560, 588, 735, 784, 840, 980, 1176, 1470, 1680, 1960, 2352, 2940, 3920, 5880, 11760, 21787, 43574, 65361, 87148, 108935, 130722, 152509, 174296, 217870, 261444, 305018, 326805, 348592, 435740, 457527, 522888, 610036, 653610, 762545, 871480, 915054, 1045776, 1067563, 1220072, 1307220, 1525090, 1742960, 1830108, 2135126, 2287635, 2440144, 2614440, 3050180, 3202689, 3660216, 4270252, 4575270, 5228880, 5337815, 6100360, 6405378, 7320432, 8540504, 9150540, 10675630, 12200720, 12810756, 16013445, 17081008, 18301080, 21351260, 25621512, 32026890, 36602160, 42702520, 51243024, 64053780, 85405040, 128107560, 256215120]

約数ペア:

[(1, 256215120), (2, 128107560), (3, 85405040), (4, 64053780), (5, 51243024), (6, 42702520), (7, 36602160), (8, 32026890), (10, 25621512), (12, 21351260), (14, 18301080), (15, 17081008), (16, 16013445), (20, 12810756), (21, 12200720), (24, 10675630), (28, 9150540), (30, 8540504), (35, 7320432), (40, 6405378), (42, 6100360), (48, 5337815), (49, 5228880), (56, 4575270), (60, 4270252), (70, 3660216), (80, 3202689), (84, 3050180), (98, 2614440), (105, 2440144), (112, 2287635), (120, 2135126), (140, 1830108), (147, 1742960), (168, 1525090), (196, 1307220), (210, 1220072), (240, 1067563), (245, 1045776), (280, 915054), (294, 871480), (336, 762545), (392, 653610), (420, 610036), (490, 522888), (560, 457527), (588, 435740), (735, 348592), (784, 326805), (840, 305018), (980, 261444), (1176, 217870), (1470, 174296), (1680, 152509), (1960, 130722), (2352, 108935), (2940, 87148), (3920, 65361), (5880, 43574), (11760, 21787)]