256995840

素因数分解:

$2^9\times 3^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{307}}^1$

素因数の和:442

約数の個数: 160

約数和(自身を含む): 831821760

約数和(自身を除く): 574825920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 109, 120, 128, 160, 192, 218, 240, 256, 307, 320, 327, 384, 436, 480, 512, 545, 614, 640, 654, 768, 872, 921, 960, 1090, 1228, 1280, 1308, 1535, 1536, 1635, 1744, 1842, 1920, 2180, 2456, 2560, 2616, 3070, 3270, 3488, 3684, 3840, 4360, 4605, 4912, 5232, 6140, 6540, 6976, 7368, 7680, 8720, 9210, 9824, 10464, 12280, 13080, 13952, 14736, 17440, 18420, 19648, 20928, 24560, 26160, 27904, 29472, 33463, 34880, 36840, 39296, 41856, 49120, 52320, 55808, 58944, 66926, 69760, 73680, 78592, 83712, 98240, 100389, 104640, 117888, 133852, 139520, 147360, 157184, 167315, 167424, 196480, 200778, 209280, 235776, 267704, 279040, 294720, 334630, 392960, 401556, 418560, 471552, 501945, 535408, 589440, 669260, 785920, 803112, 837120, 1003890, 1070816, 1178880, 1338520, 1606224, 2007780, 2141632, 2357760, 2677040, 3212448, 4015560, 4283264, 5354080, 6424896, 8031120, 8566528, 10708160, 12849792, 16062240, 17133056, 21416320, 25699584, 32124480, 42832640, 51399168, 64248960, 85665280, 128497920, 256995840]

約数ペア:

[(1, 256995840), (2, 128497920), (3, 85665280), (4, 64248960), (5, 51399168), (6, 42832640), (8, 32124480), (10, 25699584), (12, 21416320), (15, 17133056), (16, 16062240), (20, 12849792), (24, 10708160), (30, 8566528), (32, 8031120), (40, 6424896), (48, 5354080), (60, 4283264), (64, 4015560), (80, 3212448), (96, 2677040), (109, 2357760), (120, 2141632), (128, 2007780), (160, 1606224), (192, 1338520), (218, 1178880), (240, 1070816), (256, 1003890), (307, 837120), (320, 803112), (327, 785920), (384, 669260), (436, 589440), (480, 535408), (512, 501945), (545, 471552), (614, 418560), (640, 401556), (654, 392960), (768, 334630), (872, 294720), (921, 279040), (960, 267704), (1090, 235776), (1228, 209280), (1280, 200778), (1308, 196480), (1535, 167424), (1536, 167315), (1635, 157184), (1744, 147360), (1842, 139520), (1920, 133852), (2180, 117888), (2456, 104640), (2560, 100389), (2616, 98240), (3070, 83712), (3270, 78592), (3488, 73680), (3684, 69760), (3840, 66926), (4360, 58944), (4605, 55808), (4912, 52320), (5232, 49120), (6140, 41856), (6540, 39296), (6976, 36840), (7368, 34880), (7680, 33463), (8720, 29472), (9210, 27904), (9824, 26160), (10464, 24560), (12280, 20928), (13080, 19648), (13952, 18420), (14736, 17440)]