28078400

素因数分解:

$2^6\times 5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1$

素因数の和:161

約数の個数: 168

約数和(自身を含む): 83149440

約数和(自身を除く): 55071040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 25, 28, 32, 35, 40, 46, 50, 56, 64, 70, 80, 92, 100, 109, 112, 115, 140, 160, 161, 175, 184, 200, 218, 224, 230, 280, 320, 322, 350, 368, 400, 436, 448, 460, 545, 560, 575, 644, 700, 736, 763, 800, 805, 872, 920, 1090, 1120, 1150, 1288, 1400, 1472, 1526, 1600, 1610, 1744, 1840, 2180, 2240, 2300, 2507, 2576, 2725, 2800, 3052, 3220, 3488, 3680, 3815, 4025, 4360, 4600, 5014, 5152, 5450, 5600, 6104, 6440, 6976, 7360, 7630, 8050, 8720, 9200, 10028, 10304, 10900, 11200, 12208, 12535, 12880, 15260, 16100, 17440, 17549, 18400, 19075, 20056, 21800, 24416, 25070, 25760, 30520, 32200, 34880, 35098, 36800, 38150, 40112, 43600, 48832, 50140, 51520, 61040, 62675, 64400, 70196, 76300, 80224, 87200, 87745, 100280, 122080, 125350, 128800, 140392, 152600, 160448, 174400, 175490, 200560, 244160, 250700, 257600, 280784, 305200, 350980, 401120, 438725, 501400, 561568, 610400, 701960, 802240, 877450, 1002800, 1123136, 1220800, 1403920, 1754900, 2005600, 2807840, 3509800, 4011200, 5615680, 7019600, 14039200, 28078400]

約数ペア:

[(1, 28078400), (2, 14039200), (4, 7019600), (5, 5615680), (7, 4011200), (8, 3509800), (10, 2807840), (14, 2005600), (16, 1754900), (20, 1403920), (23, 1220800), (25, 1123136), (28, 1002800), (32, 877450), (35, 802240), (40, 701960), (46, 610400), (50, 561568), (56, 501400), (64, 438725), (70, 401120), (80, 350980), (92, 305200), (100, 280784), (109, 257600), (112, 250700), (115, 244160), (140, 200560), (160, 175490), (161, 174400), (175, 160448), (184, 152600), (200, 140392), (218, 128800), (224, 125350), (230, 122080), (280, 100280), (320, 87745), (322, 87200), (350, 80224), (368, 76300), (400, 70196), (436, 64400), (448, 62675), (460, 61040), (545, 51520), (560, 50140), (575, 48832), (644, 43600), (700, 40112), (736, 38150), (763, 36800), (800, 35098), (805, 34880), (872, 32200), (920, 30520), (1090, 25760), (1120, 25070), (1150, 24416), (1288, 21800), (1400, 20056), (1472, 19075), (1526, 18400), (1600, 17549), (1610, 17440), (1744, 16100), (1840, 15260), (2180, 12880), (2240, 12535), (2300, 12208), (2507, 11200), (2576, 10900), (2725, 10304), (2800, 10028), (3052, 9200), (3220, 8720), (3488, 8050), (3680, 7630), (3815, 7360), (4025, 6976), (4360, 6440), (4600, 6104), (5014, 5600), (5152, 5450)]