256716800

素因数分解:

$2^{12}\times 5^2\times {\mathrm{23}}^1\times {\mathrm{109}}^1$

素因数の和:166

約数の個数: 156

約数和(自身を含む): 670351440

約数和(自身を除く): 413634640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 25, 32, 40, 46, 50, 64, 80, 92, 100, 109, 115, 128, 160, 184, 200, 218, 230, 256, 320, 368, 400, 436, 460, 512, 545, 575, 640, 736, 800, 872, 920, 1024, 1090, 1150, 1280, 1472, 1600, 1744, 1840, 2048, 2180, 2300, 2507, 2560, 2725, 2944, 3200, 3488, 3680, 4096, 4360, 4600, 5014, 5120, 5450, 5888, 6400, 6976, 7360, 8720, 9200, 10028, 10240, 10900, 11776, 12535, 12800, 13952, 14720, 17440, 18400, 20056, 20480, 21800, 23552, 25070, 25600, 27904, 29440, 34880, 36800, 40112, 43600, 47104, 50140, 51200, 55808, 58880, 62675, 69760, 73600, 80224, 87200, 94208, 100280, 102400, 111616, 117760, 125350, 139520, 147200, 160448, 174400, 200560, 223232, 235520, 250700, 279040, 294400, 320896, 348800, 401120, 446464, 471040, 501400, 558080, 588800, 641792, 697600, 802240, 1002800, 1116160, 1177600, 1283584, 1395200, 1604480, 2005600, 2232320, 2355200, 2567168, 2790400, 3208960, 4011200, 5134336, 5580800, 6417920, 8022400, 10268672, 11161600, 12835840, 16044800, 25671680, 32089600, 51343360, 64179200, 128358400, 256716800]

約数ペア:

[(1, 256716800), (2, 128358400), (4, 64179200), (5, 51343360), (8, 32089600), (10, 25671680), (16, 16044800), (20, 12835840), (23, 11161600), (25, 10268672), (32, 8022400), (40, 6417920), (46, 5580800), (50, 5134336), (64, 4011200), (80, 3208960), (92, 2790400), (100, 2567168), (109, 2355200), (115, 2232320), (128, 2005600), (160, 1604480), (184, 1395200), (200, 1283584), (218, 1177600), (230, 1116160), (256, 1002800), (320, 802240), (368, 697600), (400, 641792), (436, 588800), (460, 558080), (512, 501400), (545, 471040), (575, 446464), (640, 401120), (736, 348800), (800, 320896), (872, 294400), (920, 279040), (1024, 250700), (1090, 235520), (1150, 223232), (1280, 200560), (1472, 174400), (1600, 160448), (1744, 147200), (1840, 139520), (2048, 125350), (2180, 117760), (2300, 111616), (2507, 102400), (2560, 100280), (2725, 94208), (2944, 87200), (3200, 80224), (3488, 73600), (3680, 69760), (4096, 62675), (4360, 58880), (4600, 55808), (5014, 51200), (5120, 50140), (5450, 47104), (5888, 43600), (6400, 40112), (6976, 36800), (7360, 34880), (8720, 29440), (9200, 27904), (10028, 25600), (10240, 25070), (10900, 23552), (11776, 21800), (12535, 20480), (12800, 20056), (13952, 18400), (14720, 17440)]